#645F74

#645F74

Color Values

HEX

#645F74

RGB

100, 95, 116

HSL

254.3, 10.0%, 41.4%

HSV

254.3, 18.1%, 45.5%

CMYK

13.8%, 18.1%, 0.0%, 54.5%

OKLCH

0.4978 0.0336 296.1

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#645F74

#6F745F

Analogous

#5F6574

#6F5F74

#645F74

Triadic

#645F74

#74645F

#5F7464

Split Complementary

#645F74

#746F5F

#65745F

Tetradic

#645F74

#745F65

#6F745F

#5F746F

Color Blindness Simulation

Original

#645F74

Protanopia

#62626F

Deuteranopia

#62626E

Tritanopia

#646B6A

Achromatopsia

#626262

CSS Usage

background-color: #645F74;
color: #645F74;
border-color: #645F74;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F7F7F8
100
#ECECEF
200
#D9D8DF
300
#BFBCC8
400
#9C97AA
500
#79738C
600
#615C70
700
#4D495A
800
#3C3946
900
#2E2C35
950
#1D1C21

Contrast Checker

Text on white

6.12:1

AA Pass AAA Fail

Text on black

3.43:1

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