#645B85

#645B85

Color Values

HEX

#645B85

RGB

100, 91, 133

HSL

252.9, 18.8%, 43.9%

HSV

252.9, 31.6%, 52.2%

CMYK

24.8%, 31.6%, 0.0%, 47.8%

OKLCH

0.4968 0.0668 293.7

Properties

Cool Dark Nearest: RAL 4011 Pearl Violet

Color Harmonies

Complementary

#645B85

#7C855B

Analogous

#5B6785

#795B85

#645B85

Triadic

#645B85

#85645B

#5B8564

Split Complementary

#645B85

#85795B

#67855B

Tetradic

#645B85

#855B67

#7C855B

#5B8579

Color Blindness Simulation

Original

#645B85

Protanopia

#60607B

Deuteranopia

#616178

Tritanopia

#647371

Achromatopsia

#606060

CSS Usage

background-color: #645B85;
color: #645B85;
border-color: #645B85;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F7F6F9
100
#ECEAF0
200
#D7D5E2
300
#BBB6CD
400
#978FB2
500
#726897
600
#5B5379
700
#494261
800
#39344C
900
#2C2839
950
#1C1924

Contrast Checker

Text on white

6.22:1

AA Pass AAA Fail

Text on black

3.38:1

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