#663E9B

#663E9B

Color Values

HEX

#663E9B

RGB

102, 62, 155

HSL

265.8, 42.9%, 42.5%

HSV

265.8, 60.0%, 60.8%

CMYK

34.2%, 60.0%, 0.0%, 39.2%

OKLCH

0.4579 0.1466 300.5

Properties

Cool Dark Nearest: rebeccapurple

Color Harmonies

Complementary

#663E9B

#739B3E

Analogous

#3E449B

#943E9B

#663E9B

Triadic

#663E9B

#9B663E

#3E9B66

Split Complementary

#663E9B

#9B943E

#449B3E

Tetradic

#663E9B

#9B3E44

#739B3E

#3E9B94

Color Blindness Simulation

Original

#663E9B

Protanopia

#555485

Deuteranopia

#575A7F

Tritanopia

#64736F

Achromatopsia

#4D4D4D

CSS Usage

background-color: #663E9B;
color: #663E9B;
border-color: #663E9B;
Nearest Tailwind: Purple 900 #581C87

Tailwind Shades

50
#F7F5FA
100
#ECE7F4
200
#D9CCEB
300
#BEA8DC
400
#9B78C9
500
#7849B6
600
#603A92
700
#4D2F75
800
#3C245B
900
#2E1E43
950
#1D132A

Contrast Checker

Text on white

7.7:1

AA Pass AAA Pass

Text on black

2.73:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026