#66628B

#66628B

Color Values

HEX

#66628B

RGB

102, 98, 139

HSL

245.9, 17.3%, 46.5%

HSV

245.9, 29.5%, 54.5%

CMYK

26.6%, 29.5%, 0.0%, 45.5%

OKLCH

0.5163 0.0643 288.4

Properties

Cool Dark Nearest: RAL 4011 Pearl Violet

Color Harmonies

Complementary

#66628B

#878B62

Analogous

#62738B

#7B628B

#66628B

Triadic

#66628B

#8B6662

#628B66

Split Complementary

#66628B

#8B7B62

#738B62

Tetradic

#66628B

#8B6273

#878B62

#628B7B

Color Blindness Simulation

Original

#66628B

Protanopia

#646481

Deuteranopia

#64657F

Tritanopia

#667978

Achromatopsia

#666666

CSS Usage

background-color: #66628B;
color: #66628B;
border-color: #66628B;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F6F8
100
#EBEBF0
200
#D6D5E1
300
#B9B7CC
400
#9490B1
500
#6E6996
600
#585478
700
#464360
800
#37354B
900
#2A2938
950
#1B1A23

Contrast Checker

Text on white

5.7:1

AA Pass AAA Fail

Text on black

3.68:1

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