#666DCF

#666DCF

Color Values

HEX

#666DCF

RGB

102, 109, 207

HSL

236,0, 52,2%, 60,6%

HSV

236,0, 50,7%, 81,2%

CMYK

50,7%, 47,3%, 0,0%, 18,8%

OKLCH

0,5768 0,1485 277,6

Properties

Cool Light Nearest: NCS S 1050-R90B Blue Violet

Color Harmonies

Complementary

#666DCF

#CFC866

Analogous

#66A2CF

#9466CF

#666DCF

Triadic

#666DCF

#CF666D

#6DCF66

Split Complementary

#666DCF

#CF9466

#A2CF66

Tetradic

#666DCF

#CF66A2

#CFC866

#66CF94

Color Blindness Simulation

Original

#666DCF

Protanopia

#6969B7

Deuteranopia

#6968B2

Tritanopia

#66A5A0

Achromatopsia

#737373

CSS Usage

background-color: #666DCF;
color: #666DCF;
border-color: #666DCF;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F4F4FB
100
#E5E6F5
200
#C9CBEE
300
#A2A6E2
400
#6F76D2
500
#3D46C2
600
#31389B
700
#272D7C
800
#1E2361
900
#1A1D47
950
#10122D

Contrast Checker

Text on white

4,51:1

AA Pass AAA Fail

Text on black

4,65:1

AA Pass AAA Fail

Related Articles

Tutorials

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

Oca 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Oca 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Oca 15, 2026