#664F80

#664F80

Color Values

HEX

#664F80

RGB

102, 79, 128

HSL

268.2, 23.7%, 40.6%

HSV

268.2, 38.3%, 50.2%

CMYK

20.3%, 38.3%, 0.0%, 49.8%

OKLCH

0.4718 0.0814 305.1

Properties

Cool Dark Nearest: RAL 4005 Blue Lilac

Color Harmonies

Complementary

#664F80

#69804F

Analogous

#4F5080

#7F4F80

#664F80

Triadic

#664F80

#80664F

#4F8066

Split Complementary

#664F80

#807F4F

#50804F

Tetradic

#664F80

#804F50

#69804F

#4F807F

Color Blindness Simulation

Original

#664F80

Protanopia

#5C5C74

Deuteranopia

#5D5F71

Tritanopia

#656B69

Achromatopsia

#575757

CSS Usage

background-color: #664F80;
color: #664F80;
border-color: #664F80;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F7F6F9
100
#EDEAF1
200
#DBD3E4
300
#C1B3D0
400
#9F8AB7
500
#7E619E
600
#654E7E
700
#503E65
800
#3F314F
900
#30263B
950
#1E1825

Contrast Checker

Text on white

7.01:1

AA Pass AAA Pass

Text on black

3.0:1

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