#666EB7

#666EB7

Color Values

HEX

#666EB7

RGB

102, 110, 183

HSL

234,1, 36,0%, 55,9%

HSV

234,1, 44,3%, 71,8%

CMYK

44,3%, 39,9%, 0,0%, 28,2%

OKLCH

0,5644 0,1127 277,4

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#666EB7

#B7AF66

Analogous

#6697B7

#8766B7

#666EB7

Triadic

#666EB7

#B7666E

#6EB766

Split Complementary

#666EB7

#B78766

#97B766

Tetradic

#666EB7

#B76697

#B7AF66

#66B787

Color Blindness Simulation

Original

#666EB7

Protanopia

#696AA5

Deuteranopia

#6968A1

Tritanopia

#669794

Achromatopsia

#727272

CSS Usage

background-color: #666EB7;
color: #666EB7;
border-color: #666EB7;
Nearest Tailwind: Sky 700 #0369A1

Tailwind Shades

50
#F5F5FA
100
#E8E9F3
200
#CED1E8
300
#ACB0D8
400
#7F85C3
500
#525BAD
600
#41498B
700
#343A6F
800
#292D57
900
#212440
950
#151729

Contrast Checker

Text on white

4,69:1

AA Pass AAA Fail

Text on black

4,48:1

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