#664D74

#664D74

Color Values

HEX

#664D74

RGB

102, 77, 116

HSL

278.5, 20.2%, 37.8%

HSV

278.5, 33.6%, 45.5%

CMYK

12.1%, 33.6%, 0.0%, 54.5%

OKLCH

0.4619 0.0686 313.0

Properties

Cool Dark Nearest: RAL 4005 Blue Lilac

Color Harmonies

Complementary

#664D74

#5B744D

Analogous

#524D74

#744D6E

#664D74

Triadic

#664D74

#74664D

#4D7466

Split Complementary

#664D74

#6E744D

#4D7452

Tetradic

#664D74

#74524D

#5B744D

#4D6E74

Color Blindness Simulation

Original

#664D74

Protanopia

#5B5B6B

Deuteranopia

#5D5E68

Tritanopia

#656361

Achromatopsia

#555555

CSS Usage

background-color: #664D74;
color: #664D74;
border-color: #664D74;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F8F6F9
100
#EEEAF0
200
#DDD4E3
300
#C5B5CE
400
#A68EB4
500
#876699
600
#6C517B
700
#564162
800
#43334D
900
#332839
950
#201924

Contrast Checker

Text on white

7.29:1

AA Pass AAA Pass

Text on black

2.88:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026