#666DAF

#666DAF

Color Values

HEX

#666DAF

RGB

102, 109, 175

HSL

234.2, 31.3%, 54.3%

HSV

234.2, 41.7%, 68.6%

CMYK

41.7%, 37.7%, 0.0%, 31.4%

OKLCH

0.5578 0.1023 277.9

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#666DAF

#AFA866

Analogous

#6692AF

#8366AF

#666DAF

Triadic

#666DAF

#AF666D

#6DAF66

Split Complementary

#666DAF

#AF8366

#92AF66

Tetradic

#666DAF

#AF6692

#AFA866

#66AF83

Color Blindness Simulation

Original

#666DAF

Protanopia

#69699F

Deuteranopia

#69689B

Tritanopia

#669290

Achromatopsia

#707070

CSS Usage

background-color: #666DAF;
color: #666DAF;
border-color: #666DAF;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F5F6F9
100
#E8E9F2
200
#D0D2E6
300
#AFB2D5
400
#8389BE
500
#585FA7
600
#464C86
700
#383D6B
800
#2C3054
900
#23253E
950
#161827

Contrast Checker

Text on white

4.8:1

AA Pass AAA Fail

Text on black

4.37:1

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