#645D83

#645D83

Color Values

HEX

#645D83

RGB

100, 93, 131

HSL

251.1, 17.0%, 43.9%

HSV

251.1, 29.0%, 51.4%

CMYK

23.7%, 29.0%, 0.0%, 48.6%

OKLCH

0.5001 0.0603 292.5

Properties

Cool Dark Nearest: RAL 5014 Pigeon Blue

Color Harmonies

Complementary

#645D83

#7C835D

Analogous

#5D6983

#775D83

#645D83

Triadic

#645D83

#83645D

#5D8364

Split Complementary

#645D83

#83775D

#69835D

Tetradic

#645D83

#835D69

#7C835D

#5D8377

Color Blindness Simulation

Original

#645D83

Protanopia

#61617A

Deuteranopia

#616278

Tritanopia

#647371

Achromatopsia

#616161

CSS Usage

background-color: #645D83;
color: #645D83;
border-color: #645D83;
Nearest Tailwind: Slate 600 #475569

Tailwind Shades

50
#F7F6F8
100
#ECEBF0
200
#D7D5E1
300
#BBB7CC
400
#9791B1
500
#726A95
600
#5B5577
700
#49445F
800
#39354B
900
#2C2938
950
#1C1A23

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