#645B89

#645B89

Color Values

HEX

#645B89

RGB

100, 91, 137

HSL

251.7, 20.2%, 44.7%

HSV

251.7, 33.6%, 53.7%

CMYK

27.0%, 33.6%, 0.0%, 46.3%

OKLCH

0.4988 0.0728 292.5

Properties

Cool Dark Nearest: RAL 4011 Pearl Violet

Color Harmonies

Complementary

#645B89

#80895B

Analogous

#5B6989

#7B5B89

#645B89

Triadic

#645B89

#89645B

#5B8964

Split Complementary

#645B89

#897B5B

#69895B

Tetradic

#645B89

#895B69

#80895B

#5B897B

Color Blindness Simulation

Original

#645B89

Protanopia

#60607E

Deuteranopia

#61617B

Tritanopia

#647573

Achromatopsia

#606060

CSS Usage

background-color: #645B89;
color: #645B89;
border-color: #645B89;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F7F6F9
100
#EBEAF0
200
#D7D4E3
300
#BAB5CE
400
#958EB4
500
#706699
600
#59517B
700
#484162
800
#38334D
900
#2B2839
950
#1B1924

Contrast Checker

Text on white

6.18:1

AA Pass AAA Fail

Text on black

3.4:1

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