#645F75

#645F75

Color Values

HEX

#645F75

RGB

100, 95, 117

HSL

253.6, 10.4%, 41.6%

HSV

253.6, 18.8%, 45.9%

CMYK

14.5%, 18.8%, 0.0%, 54.1%

OKLCH

0.4982 0.0351 295.5

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#645F75

#70755F

Analogous

#5F6575

#6F5F75

#645F75

Triadic

#645F75

#75645F

#5F7564

Split Complementary

#645F75

#756F5F

#65755F

Tetradic

#645F75

#755F65

#70755F

#5F756F

Color Blindness Simulation

Original

#645F75

Protanopia

#626270

Deuteranopia

#62626E

Tritanopia

#646B6B

Achromatopsia

#626262

CSS Usage

background-color: #645F75;
color: #645F75;
border-color: #645F75;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F7F7F8
100
#ECECEF
200
#D9D8DF
300
#BEBBC8
400
#9B97AA
500
#78728D
600
#605B71
700
#4D495A
800
#3C3946
900
#2E2C35
950
#1D1C21

Contrast Checker

Text on white

6.11:1

AA Pass AAA Fail

Text on black

3.44:1

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