#645EB2

#645EB2

Color Values

HEX

#645EB2

RGB

100, 94, 178

HSL

244.3, 35.3%, 53.3%

HSV

244.3, 47.2%, 69.8%

CMYK

43.8%, 47.2%, 0.0%, 30.2%

OKLCH

0.5279 0.1288 284.3

Properties

Cool Dark Nearest: Blue Violet

Color Harmonies

Complementary

#645EB2

#ACB25E

Analogous

#5E82B2

#8E5EB2

#645EB2

Triadic

#645EB2

#B2645E

#5EB264

Split Complementary

#645EB2

#B28E5E

#82B25E

Tetradic

#645EB2

#B25E82

#ACB25E

#5EB28E

Color Blindness Simulation

Original

#645EB2

Protanopia

#61619E

Deuteranopia

#626299

Tritanopia

#648E8A

Achromatopsia

#656565

CSS Usage

background-color: #645EB2;
color: #645EB2;
border-color: #645EB2;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E9E8F3
200
#D1CFE8
300
#AFACD7
400
#847FC2
500
#5952AD
600
#47428A
700
#39356E
800
#2C2956
900
#232140
950
#161528

Contrast Checker

Text on white

5.55:1

AA Pass AAA Fail

Text on black

3.79:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026