This is an experimental theory, an idea that just occured to me, and although I couldn't find any practical applications, I think there must many of it. I hope someone will pick up this idea and make practical use of it.
The electromagnetic waves and the zodiac
The visible part of spectre of electromagnetic waves is what we call light. More exactly, from the entire range of electromagnetic radiations, the human eye can only perceive those with the wavelength between 380 and 780 nanometers (nm). Below 380 nm, there is the ultraviolet radiation, beyond 780 nm there is the infrared range.
I think there is a correlation between the visible light of different wavelenghts and the zodiac: the visible spectre begins with red and ends with violet, this can be associated with the range of 360 degrees of the zodiac, from Aries to Pisces.
The wavelength - colors correlation
Since the light with a wavelenght of 780 nm is a red light, and the light with a wavelenght of 380 nm is a violet light, a correlation can be considered between the light of 780 nm and 0 degrees Aries and so on, ending with a correlation between the light of 380 nm and 29 degrees Pisces.
In the table below, I used a linear function wavelengh-degree, but the real correlation could also be a non-linear function, such as a sinusoid, for instance.
| Degree | Wavelenght | Color code | Color |
Aries | |||
| 0� Aries | 780nm | #610000 | |
| 1� Aries | 778nm | #660000 | |
| 2� Aries | 777nm | #680000 | |
| 3� Aries | 776nm | #6A0000 | |
| 4� Aries | 775nm | #6D0000 | |
| 5� Aries | 774nm | #6F0000 | |
| 6� Aries | 773nm | #710000 | |
| 7� Aries | 772nm | #730000 | |
| 8� Aries | 771nm | #750000 | |
| 9� Aries | 770nm | #770000 | |
| 10� Aries | 768nm | #7C0000 | |
| 11� Aries | 767nm | #7E0000 | |
| 12� Aries | 766nm | #800000 | |
| 13� Aries | 765nm | #820000 | |
| 14� Aries | 764nm | #840000 | |
| 15� Aries | 763nm | #860000 | |
| 16� Aries | 762nm | #880000 | |
| 17� Aries | 761nm | #8A0000 | |
| 18� Aries | 760nm | #8D0000 | |
| 19� Aries | 758nm | #910000 | |
| 20� Aries | 757nm | #930000 | |
| 21� Aries | 756nm | #950000 | |
| 22� Aries | 755nm | #970000 | |
| 23� Aries | 754nm | #990000 | |
| 24� Aries | 753nm | #9B0000 | |
| 25� Aries | 752nm | #9D0000 | |
| 26� Aries | 751nm | #9F0000 | |
| 27� Aries | 750nm | #A10000 | |
| 28� Aries | 748nm | #A50000 | |
| 29� Aries | 747nm | #A70000 | |
| Taurus | |||
| 0� Taurus | 746nm | #A90000 | |
| 1� Taurus | 745nm | #AB0000 | |
| 2� Taurus | 744nm | #AD0000 | |
| 3� Taurus | 743nm | #AF0000 | |
| 4� Taurus | 742nm | #B10000 | |
| 5� Taurus | 741nm | #B30000 | |
| 6� Taurus | 740nm | #B50000 | |
| 7� Taurus | 738nm | #B90000 | |
| 8� Taurus | 737nm | #BA0000 | |
| 9� Taurus | 736nm | #BC0000 | |
| 10� Taurus | 735nm | #BE0000 | |
| 11� Taurus | 734nm | #C00000 | |
| 12� Taurus | 733nm | #C20000 | |
| 13� Taurus | 732nm | #C40000 | |
| 14� Taurus | 731nm | #C60000 | |
| 15� Taurus | 730nm | #C80000 | |
| 16� Taurus | 728nm | #CC0000 | |
| 17� Taurus | 727nm | #CE0000 | |
| 18� Taurus | 726nm | #CF0000 | |
| 19� Taurus | 725nm | #D10000 | |
| 20� Taurus | 724nm | #D30000 | |
| 21� Taurus | 723nm | #D50000 | |
| 22� Taurus | 722nm | #D70000 | |
| 23� Taurus | 721nm | #D90000 | |
| 24� Taurus | 720nm | #DB0000 | |
| 25� Taurus | 718nm | #DE0000 | |
| 26� Taurus | 717nm | #E00000 | |
| 27� Taurus | 716nm | #E20000 | |
| 28� Taurus | 715nm | #E40000 | |
| 29� Taurus | 714nm | #E60000 | |
| Gemini | |||
| 0� Gemini | 713nm | #E80000 | |
| 1� Gemini | 712nm | #E90000 | |
| 2� Gemini | 711nm | #EB0000 | |
| 3� Gemini | 710nm | #ED0000 | |
| 4� Gemini | 708nm | #F10000 | |
| 5� Gemini | 707nm | #F20000 | |
| 6� Gemini | 706nm | #F40000 | |
| 7� Gemini | 705nm | #F60000 | |
| 8� Gemini | 704nm | #F80000 | |
| 9� Gemini | 703nm | #FA0000 | |
| 10� Gemini | 702nm | #FB0000 | |
| 11� Gemini | 701nm | #FD0000 | |
| 12� Gemini | 700nm | #FF0000 | |
| 13� Gemini | 698nm | #FF0000 | |
| 14� Gemini | 697nm | #FF0000 | |
| 15� Gemini | 696nm | #FF0000 | |
| 16� Gemini | 695nm | #FF0000 | |
| 17� Gemini | 694nm | #FF0000 | |
| 18� Gemini | 693nm | #FF0000 | |
| 19� Gemini | 692nm | #FF0000 | |
| 20� Gemini | 691nm | #FF0000 | |
| 21� Gemini | 690nm | #FF0000 | |
| 22� Gemini | 688nm | #FF0000 | |
| 23� Gemini | 687nm | #FF0000 | |
| 24� Gemini | 686nm | #FF0000 | |
| 25� Gemini | 685nm | #FF0000 | |
| 26� Gemini | 684nm | #FF0000 | |
| 27� Gemini | 683nm | #FF0000 | |
| 28� Gemini | 682nm | #FF0000 | |
| 29� Gemini | 681nm | #FF0000 | |
| Cancer | |||
| 0� Cancer | 680nm | #FF0000 | |
| 1� Cancer | 678nm | #FF0000 | |
| 2� Cancer | 677nm | #FF0000 | |
| 3� Cancer | 676nm | #FF0000 | |
| 4� Cancer | 675nm | #FF0000 | |
| 5� Cancer | 674nm | #FF0000 | |
| 6� Cancer | 673nm | #FF0000 | |
| 7� Cancer | 672nm | #FF0000 | |
| 8� Cancer | 671nm | #FF0000 | |
| 9� Cancer | 670nm | #FF0000 | |
| 10� Cancer | 668nm | #FF0000 | |
| 11� Cancer | 667nm | #FF0000 | |
| 12� Cancer | 666nm | #FF0000 | |
| 13� Cancer | 665nm | #FF0000 | |
| 14� Cancer | 664nm | #FF0000 | |
| 15� Cancer | 663nm | #FF0000 | |
| 16� Cancer | 662nm | #FF0000 | |
| 17� Cancer | 661nm | #FF0000 | |
| 18� Cancer | 660nm | #FF0000 | |
| 19� Cancer | 658nm | #FF0000 | |
| 20� Cancer | 657nm | #FF0000 | |
| 21� Cancer | 656nm | #FF0000 | |
| 22� Cancer | 655nm | #FF0000 | |
| 23� Cancer | 654nm | #FF0000 | |
| 24� Cancer | 653nm | #FF0000 | |
| 25� Cancer | 652nm | #FF0000 | |
| 26� Cancer | 651nm | #FF0000 | |
| 27� Cancer | 650nm | #FF0000 | |
| 28� Cancer | 648nm | #FF0000 | |
| 29� Cancer | 647nm | #FF0000 | |
| Leo | |||
| 0� Leo | 646nm | #FF0000 | |
| 1� Leo | 645nm | #FF0000 | |
| 2� Leo | 644nm | #FF0900 | |
| 3� Leo | 643nm | #FF1000 | |
| 4� Leo | 642nm | #FF1600 | |
| 5� Leo | 641nm | #FF1B00 | |
| 6� Leo | 640nm | #FF2100 | |
| 7� Leo | 638nm | #FF2B00 | |
| 8� Leo | 637nm | #FF3000 | |
| 9� Leo | 636nm | #FF3400 | |
| 10� Leo | 635nm | #FF3900 | |
| 11� Leo | 634nm | #FF3E00 | |
| 12� Leo | 633nm | #FF4200 | |
| 13� Leo | 632nm | #FF4600 | |
| 14� Leo | 631nm | #FF4B00 | |
| 15� Leo | 630nm | #FF4F00 | |
| 16� Leo | 628nm | #FF5700 | |
| 17� Leo | 627nm | #FF5B00 | |
| 18� Leo | 626nm | #FF5F00 | |
| 19� Leo | 625nm | #FF6300 | |
| 20� Leo | 624nm | #FF6700 | |
| 21� Leo | 623nm | #FF6B00 | |
| 22� Leo | 622nm | #FF6F00 | |
| 23� Leo | 621nm | #FF7300 | |
| 24� Leo | 620nm | #FF7700 | |
| 25� Leo | 618nm | #FF7E00 | |
| 26� Leo | 617nm | #FF8200 | |
| 27� Leo | 616nm | #FF8600 | |
| 28� Leo | 615nm | #FF8900 | |
| 29� Leo | 614nm | #FF8D00 | |
| Virgo | |||
| 0� Virgo | 613nm | #FF9100 | |
| 1� Virgo | 612nm | #FF9400 | |
| 2� Virgo | 611nm | #FF9800 | |
| 3� Virgo | 610nm | #FF9B00 | |
| 4� Virgo | 608nm | #FFA200 | |
| 5� Virgo | 607nm | #FFA600 | |
| 6� Virgo | 606nm | #FFA900 | |
| 7� Virgo | 605nm | #FFAD00 | |
| 8� Virgo | 604nm | #FFB000 | |
| 9� Virgo | 603nm | #FFB400 | |
| 10� Virgo | 602nm | #FFB700 | |
| 11� Virgo | 601nm | #FFBB00 | |
| 12� Virgo | 600nm | #FFBE00 | |
| 13� Virgo | 598nm | #FFC500 | |
| 14� Virgo | 597nm | #FFC800 | |
| 15� Virgo | 596nm | #FFCB00 | |
| 16� Virgo | 595nm | #FFCF00 | |
| 17� Virgo | 594nm | #FFD200 | |
| 18� Virgo | 593nm | #FFD500 | |
| 19� Virgo | 592nm | #FFD900 | |
| 20� Virgo | 591nm | #FFDC00 | |
| 21� Virgo | 590nm | #FFDF00 | |
| 22� Virgo | 588nm | #FFE600 | |
| 23� Virgo | 587nm | #FFE900 | |
| 24� Virgo | 586nm | #FFEC00 | |
| 25� Virgo | 585nm | #FFEF00 | |
| 26� Virgo | 584nm | #FFF200 | |
| 27� Virgo | 583nm | #FFF600 | |
| 28� Virgo | 582nm | #FFF900 | |
| 29� Virgo | 581nm | #FFFC00 | |
| Libra | |||
| 0� Libra | 580nm | #FFFF00 | |
| 1� Libra | 578nm | #F9FF00 | |
| 2� Libra | 577nm | #F6FF00 | |
| 3� Libra | 576nm | #F3FF00 | |
| 4� Libra | 575nm | #F0FF00 | |
| 5� Libra | 574nm | #EDFF00 | |
| 6� Libra | 573nm | #EAFF00 | |
| 7� Libra | 572nm | #E7FF00 | |
| 8� Libra | 571nm | #E4FF00 | |
| 9� Libra | 570nm | #E1FF00 | |
| 10� Libra | 568nm | #DBFF00 | |
| 11� Libra | 567nm | #D8FF00 | |
| 12� Libra | 566nm | #D5FF00 | |
| 13� Libra | 565nm | #D2FF00 | |
| 14� Libra | 564nm | #CFFF00 | |
| 15� Libra | 563nm | #CCFF00 | |
| 16� Libra | 562nm | #C9FF00 | |
| 17� Libra | 561nm | #C6FF00 | |
| 18� Libra | 560nm | #C3FF00 | |
| 19� Libra | 558nm | #BDFF00 | |
| 20� Libra | 557nm | #B9FF00 | |
| 21� Libra | 556nm | #B6FF00 | |
| 22� Libra | 555nm | #B3FF00 | |
| 23� Libra | 554nm | #B0FF00 | |
| 24� Libra | 553nm | #ADFF00 | |
| 25� Libra | 552nm | #A9FF00 | |
| 26� Libra | 551nm | #A6FF00 | |
| 27� Libra | 550nm | #A3FF00 | |
| 28� Libra | 548nm | #9CFF00 | |
| 29� Libra | 547nm | #99FF00 | |
| Scorpio | |||
| 0� Scorpio | 546nm | #96FF00 | |
| 1� Scorpio | 545nm | #92FF00 | |
| 2� Scorpio | 544nm | #8FFF00 | |
| 3� Scorpio | 543nm | #8CFF00 | |
| 4� Scorpio | 542nm | #88FF00 | |
| 5� Scorpio | 541nm | #85FF00 | |
| 6� Scorpio | 540nm | #81FF00 | |
| 7� Scorpio | 538nm | #7BFF00 | |
| 8� Scorpio | 537nm | #77FF00 | |
| 9� Scorpio | 536nm | #73FF00 | |
| 10� Scorpio | 535nm | #70FF00 | |
| 11� Scorpio | 534nm | #6CFF00 | |
| 12� Scorpio | 533nm | #69FF00 | |
| 13� Scorpio | 532nm | #65FF00 | |
| 14� Scorpio | 531nm | #61FF00 | |
| 15� Scorpio | 530nm | #5EFF00 | |
| 16� Scorpio | 528nm | #56FF00 | |
| 17� Scorpio | 527nm | #52FF00 | |
| 18� Scorpio | 526nm | #4EFF00 | |
| 19� Scorpio | 525nm | #4AFF00 | |
| 20� Scorpio | 524nm | #46FF00 | |
| 21� Scorpio | 523nm | #42FF00 | |
| 22� Scorpio | 522nm | #3EFF00 | |
| 23� Scorpio | 521nm | #3AFF00 | |
| 24� Scorpio | 520nm | #36FF00 | |
| 25� Scorpio | 518nm | #2DFF00 | |
| 26� Scorpio | 517nm | #28FF00 | |
| 27� Scorpio | 516nm | #24FF00 | |
| 28� Scorpio | 515nm | #1FFF00 | |
| 29� Scorpio | 514nm | #1AFF00 | |
| Sagittarius | |||
| 0� Sagittarius | 513nm | #15FF00 | |
| 1� Sagittarius | 512nm | #0FFF00 | |
| 2� Sagittarius | 511nm | #09FF00 | |
| 3� Sagittarius | 510nm | #00FF00 | |
| 4� Sagittarius | 508nm | #00FF28 | |
| 5� Sagittarius | 507nm | #00FF38 | |
| 6� Sagittarius | 506nm | #00FF46 | |
| 7� Sagittarius | 505nm | #00FF54 | |
| 8� Sagittarius | 504nm | #00FF61 | |
| 9� Sagittarius | 503nm | #00FF6E | |
| 10� Sagittarius | 502nm | #00FF7B | |
| 11� Sagittarius | 501nm | #00FF87 | |
| 12� Sagittarius | 500nm | #00FF92 | |
| 13� Sagittarius | 498nm | #00FFA9 | |
| 14� Sagittarius | 497nm | #00FFB5 | |
| 15� Sagittarius | 496nm | #00FFC0 | |
| 16� Sagittarius | 495nm | #00FFCB | |
| 17� Sagittarius | 494nm | #00FFD5 | |
| 18� Sagittarius | 493nm | #00FFE0 | |
| 19� Sagittarius | 492nm | #00FFEA | |
| 20� Sagittarius | 491nm | #00FFF5 | |
| 21� Sagittarius | 490nm | #00FFFF | |
| 22� Sagittarius | 488nm | #00F7FF | |
| 23� Sagittarius | 487nm | #00F3FF | |
| 24� Sagittarius | 486nm | #00EFFF | |
| 25� Sagittarius | 485nm | #00EAFF | |
| 26� Sagittarius | 484nm | #00E6FF | |
| 27� Sagittarius | 483nm | #00E2FF | |
| 28� Sagittarius | 482nm | #00DEFF | |
| 29� Sagittarius | 481nm | #00DAFF | |
| Capricorn | |||
| 0� Capricorn | 480nm | #00D5FF | |
| 1� Capricorn | 478nm | #00CDFF | |
| 2� Capricorn | 477nm | #00C8FF | |
| 3� Capricorn | 476nm | #00C4FF | |
| 4� Capricorn | 475nm | #00C0FF | |
| 5� Capricorn | 474nm | #00BBFF | |
| 6� Capricorn | 473nm | #00B7FF | |
| 7� Capricorn | 472nm | #00B2FF | |
| 8� Capricorn | 471nm | #00AEFF | |
| 9� Capricorn | 470nm | #00A9FF | |
| 10� Capricorn | 468nm | #00A0FF | |
| 11� Capricorn | 467nm | #009CFF | |
| 12� Capricorn | 466nm | #0097FF | |
| 13� Capricorn | 465nm | #0092FF | |
| 14� Capricorn | 464nm | #008EFF | |
| 15� Capricorn | 463nm | #0089FF | |
| 16� Capricorn | 462nm | #0084FF | |
| 17� Capricorn | 461nm | #007FFF | |
| 18� Capricorn | 460nm | #007BFF | |
| 19� Capricorn | 458nm | #0071FF | |
| 20� Capricorn | 457nm | #006CFF | |
| 21� Capricorn | 456nm | #0066FF | |
| 22� Capricorn | 455nm | #0061FF | |
| 23� Capricorn | 454nm | #005CFF | |
| 24� Capricorn | 453nm | #0057FF | |
| 25� Capricorn | 452nm | #0051FF | |
| 26� Capricorn | 451nm | #004CFF | |
| 27� Capricorn | 450nm | #0046FF | |
| 28� Capricorn | 448nm | #003BFF | |
| 29� Capricorn | 447nm | #0035FF | |
| Aquarius | |||
| 0� Aquarius | 446nm | #002FFF | |
| 1� Aquarius | 445nm | #0028FF | |
| 2� Aquarius | 444nm | #0022FF | |
| 3� Aquarius | 443nm | #001BFF | |
| 4� Aquarius | 442nm | #0013FF | |
| 5� Aquarius | 441nm | #000BFF | |
| 6� Aquarius | 440nm | #0000FF | |
| 7� Aquarius | 438nm | #1100FF | |
| 8� Aquarius | 437nm | #1700FF | |
| 9� Aquarius | 436nm | #1D00FF | |
| 10� Aquarius | 435nm | #2300FF | |
| 11� Aquarius | 434nm | #2800FF | |
| 12� Aquarius | 433nm | #2E00FF | |
| 13� Aquarius | 432nm | #3300FF | |
| 14� Aquarius | 431nm | #3800FF | |
| 15� Aquarius | 430nm | #3D00FF | |
| 16� Aquarius | 428nm | #4600FF | |
| 17� Aquarius | 427nm | #4B00FF | |
| 18� Aquarius | 426nm | #5000FF | |
| 19� Aquarius | 425nm | #5400FF | |
| 20� Aquarius | 424nm | #5900FF | |
| 21� Aquarius | 423nm | #5D00FF | |
| 22� Aquarius | 422nm | #6100FF | |
| 23� Aquarius | 421nm | #6600FF | |
| 24� Aquarius | 420nm | #6A00FF | |
| 25� Aquarius | 418nm | #6F00F8 | |
| 26� Aquarius | 417nm | #7100F4 | |
| 27� Aquarius | 416nm | #7400F1 | |
| 28� Aquarius | 415nm | #7600ED | |
| 29� Aquarius | 414nm | #7800E9 | |
| Pisces | |||
| 0� Pisces | 413nm | #7900E6 | |
| 1� Pisces | 412nm | #7B00E2 | |
| 2� Pisces | 411nm | #7C00DE | |
| 3� Pisces | 410nm | #7E00DB | |
| 4� Pisces | 408nm | #8000D3 | |
| 5� Pisces | 407nm | #8100CF | |
| 6� Pisces | 406nm | #8100CC | |
| 7� Pisces | 405nm | #8200C8 | |
| 8� Pisces | 404nm | #8200C4 | |
| 9� Pisces | 403nm | #8300C0 | |
| 10� Pisces | 402nm | #8300BC | |
| 11� Pisces | 401nm | #8300B9 | |
| 12� Pisces | 400nm | #8300B5 | |
| 13� Pisces | 398nm | #8200AD | |
| 14� Pisces | 397nm | #8100A9 | |
| 15� Pisces | 396nm | #8100A5 | |
| 16� Pisces | 395nm | #8000A1 | |
| 17� Pisces | 394nm | #7F009D | |
| 18� Pisces | 393nm | #7E0099 | |
| 19� Pisces | 392nm | #7C0095 | |
| 20� Pisces | 391nm | #7B0091 | |
| 21� Pisces | 390nm | #79008D | |
| 22� Pisces | 388nm | #760084 | |
| 23� Pisces | 387nm | #740080 | |
| 24� Pisces | 386nm | #72007C | |
| 25� Pisces | 385nm | #6F0077 | |
| 26� Pisces | 384nm | #6D0073 | |
| 27� Pisces | 383nm | #6A006F | |
| 28� Pisces | 382nm | #67006A | |
| 29� Pisces | 381nm | #640066 | |
Please, if you find practical applications of this theory or other astrology-colors associations, contact me.