#666AB5

#666AB5

Color Values

HEX

#666AB5

RGB

102, 106, 181

HSL

237.0, 34.8%, 55.5%

HSV

237.0, 43.6%, 71.0%

CMYK

43.6%, 41.4%, 0.0%, 29.0%

OKLCH

0.5551 0.1154 279.6

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#666AB5

#B5B166

Analogous

#6691B5

#8A66B5

#666AB5

Triadic

#666AB5

#B5666A

#6AB566

Split Complementary

#666AB5

#B58A66

#91B566

Tetradic

#666AB5

#B56691

#B5B166

#66B58A

Color Blindness Simulation

Original

#666AB5

Protanopia

#6868A3

Deuteranopia

#68679E

Tritanopia

#669591

Achromatopsia

#6F6F6F

CSS Usage

background-color: #666AB5;
color: #666AB5;
border-color: #666AB5;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F5F5FA
100
#E8E8F2
200
#CFD0E8
300
#ADAFD7
400
#8083C1
500
#5358AC
600
#434689
700
#35386E
800
#2A2C56
900
#212340
950
#151628

Contrast Checker

Text on white

4.89:1

AA Pass AAA Fail

Text on black

4.29:1

AA Fail AAA Fail

Related Articles

Tutorials

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

ม.ค. 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

ม.ค. 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

ม.ค. 15, 2026