#645AB3

#645AB3

Color Values

HEX

#645AB3

RGB

100, 90, 179

HSL

246.7, 36.9%, 52.7%

HSV

246.7, 49.7%, 70.2%

CMYK

44.1%, 49.7%, 0.0%, 29.8%

OKLCH

0.5209 0.1362 285.8

Properties

Cool Dark Nearest: Blue Violet

Color Harmonies

Complementary

#645AB3

#A9B35A

Analogous

#5A7CB3

#905AB3

#645AB3

Triadic

#645AB3

#B3645A

#5AB364

Split Complementary

#645AB3

#B3905A

#7CB35A

Tetradic

#645AB3

#B35A7C

#A9B35A

#5AB390

Color Blindness Simulation

Original

#645AB3

Protanopia

#60609D

Deuteranopia

#606198

Tritanopia

#648C89

Achromatopsia

#636363

CSS Usage

background-color: #645AB3;
color: #645AB3;
border-color: #645AB3;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E9E8F3
200
#D1CEE8
300
#B0ABD8
400
#867EC3
500
#5B50AF
600
#49408C
700
#3A3370
800
#2D2857
900
#242041
950
#171429

Contrast Checker

Text on white

5.75:1

AA Pass AAA Fail

Text on black

3.66:1

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