#645D73

#645D73

Color Values

HEX

#645D73

RGB

100, 93, 115

HSL

259.1, 10.6%, 40.8%

HSV

259.1, 19.1%, 45.1%

CMYK

13.0%, 19.1%, 0.0%, 54.9%

OKLCH

0.493 0.0356 299.6

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#645D73

#6C735D

Analogous

#5D6173

#6F5D73

#645D73

Triadic

#645D73

#73645D

#5D7364

Split Complementary

#645D73

#736F5D

#61735D

Tetradic

#645D73

#735D61

#6C735D

#5D736F

Color Blindness Simulation

Original

#645D73

Protanopia

#61616E

Deuteranopia

#61626C

Tritanopia

#646969

Achromatopsia

#606060

CSS Usage

background-color: #645D73;
color: #645D73;
border-color: #645D73;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F7F7F8
100
#EDECEF
200
#DAD8DF
300
#BFBBC8
400
#9D97AB
500
#7B728D
600
#625B71
700
#4E495A
800
#3D3947
900
#2F2C35
950
#1E1C22

Contrast Checker

Text on white

6.26:1

AA Pass AAA Fail

Text on black

3.36:1

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