#666AC7

#666AC7

Color Values

HEX

#666AC7

RGB

102, 106, 199

HSL

237.5, 46.4%, 59.0%

HSV

237.5, 48.7%, 78.0%

CMYK

48.7%, 46.7%, 0.0%, 22.0%

OKLCH

0.5659 0.1413 279.0

Properties

Cool Dark Nearest: Blue Violet

Color Harmonies

Complementary

#666AC7

#C7C366

Analogous

#669AC7

#9266C7

#666AC7

Triadic

#666AC7

#C7666A

#6AC766

Split Complementary

#666AC7

#C79266

#9AC766

Tetradic

#666AC7

#C7669A

#C7C366

#66C792

Color Blindness Simulation

Original

#666AC7

Protanopia

#6868B1

Deuteranopia

#6867AB

Tritanopia

#669F9B

Achromatopsia

#707070

CSS Usage

background-color: #666AC7;
color: #666AC7;
border-color: #666AC7;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F4F5FA
100
#E6E7F4
200
#CBCCEC
300
#A5A8DE
400
#7579CC
500
#4449BB
600
#373B95
700
#2C2F77
800
#22255D
900
#1C1E45
950
#12132B

Contrast Checker

Text on white

4.72:1

AA Pass AAA Fail

Text on black

4.45:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026