#666BBA

#666BBA

Color Values

HEX

#666BBA

RGB

102, 107, 186

HSL

236,4, 37,8%, 56,5%

HSV

236,4, 45,2%, 72,9%

CMYK

45,2%, 42,5%, 0,0%, 27,1%

OKLCH

0,56 0,1213 279,0

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#666BBA

#BAB566

Analogous

#6695BA

#8B66BA

#666BBA

Triadic

#666BBA

#BA666B

#6BBA66

Split Complementary

#666BBA

#BA8B66

#95BA66

Tetradic

#666BBA

#BA6695

#BAB566

#66BA8B

Color Blindness Simulation

Original

#666BBA

Protanopia

#6868A7

Deuteranopia

#6868A2

Tritanopia

#669894

Achromatopsia

#707070

CSS Usage

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

Tailwind Shades

50
#F5F5FA
100
#E7E8F3
200
#CECFE9
300
#ABADD9
400
#7D81C4
500
#4F55B0
600
#3F448D
700
#333670
800
#282B58
900
#202241
950
#141529

Contrast Checker

Text on white

4,8:1

AA Pass AAA Fail

Text on black

4,38:1

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