#666DAB

#666DAB

Color Values

HEX

#666DAB

RGB

102, 109, 171

HSL

233.9, 29.1%, 53.5%

HSV

233.9, 40.4%, 67.1%

CMYK

40.4%, 36.3%, 0.0%, 32.9%

OKLCH

0.5557 0.0964 277.9

Properties

Cool Dark Nearest: RAL 4011 Pearl Violet

Color Harmonies

Complementary

#666DAB

#ABA466

Analogous

#668FAB

#8166AB

#666DAB

Triadic

#666DAB

#AB666D

#6DAB66

Split Complementary

#666DAB

#AB8166

#8FAB66

Tetradic

#666DAB

#AB668F

#ABA466

#66AB81

Color Blindness Simulation

Original

#666DAB

Protanopia

#69699C

Deuteranopia

#696898

Tritanopia

#66908E

Achromatopsia

#707070

CSS Usage

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

Tailwind Shades

50
#F5F6F9
100
#E9EAF2
200
#D1D3E6
300
#B0B4D4
400
#858BBC
500
#5A62A5
600
#484E84
700
#3A3F69
800
#2D3152
900
#24263D
950
#171827

Contrast Checker

Text on white

4.84:1

AA Pass AAA Fail

Text on black

4.34:1

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