#666FBA

#666FBA

Color Values

HEX

#666FBA

RGB

102, 111, 186

HSL

233.6, 37.8%, 56.5%

HSV

233.6, 45.2%, 72.9%

CMYK

45.2%, 40.3%, 0.0%, 27.1%

OKLCH

0.5681 0.1157 276.9

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#666FBA

#BAB166

Analogous

#6699BA

#8766BA

#666FBA

Triadic

#666FBA

#BA666F

#6FBA66

Split Complementary

#666FBA

#BA8766

#99BA66

Tetradic

#666FBA

#BA6699

#BAB166

#66BA87

Color Blindness Simulation

Original

#666FBA

Protanopia

#6A6AA8

Deuteranopia

#6969A4

Tritanopia

#669A96

Achromatopsia

#737373

CSS Usage

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

Tailwind Shades

50
#F5F5FA
100
#E7E9F3
200
#CED1E9
300
#ABB0D9
400
#7D85C4
500
#4F5AB0
600
#3F488D
700
#333970
800
#282D58
900
#202341
950
#141629

Contrast Checker

Text on white

4.62:1

AA Pass AAA Fail

Text on black

4.55:1

AA Pass 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