#645DAB

#645DAB

Color Values

HEX

#645DAB

RGB

100, 93, 171

HSL

245.4, 31.7%, 51.8%

HSV

245.4, 45.6%, 67.1%

CMYK

41.5%, 45.6%, 0.0%, 32.9%

OKLCH

0.5217 0.1203 285.5

Properties

Cool Dark Nearest: Blue Violet

Color Harmonies

Complementary

#645DAB

#A4AB5D

Analogous

#5D7DAB

#8B5DAB

#645DAB

Triadic

#645DAB

#AB645D

#5DAB64

Split Complementary

#645DAB

#AB8B5D

#7DAB5D

Tetradic

#645DAB

#AB5D7D

#A4AB5D

#5DAB8B

Color Blindness Simulation

Original

#645DAB

Protanopia

#616198

Deuteranopia

#616294

Tritanopia

#648986

Achromatopsia

#646464

CSS Usage

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

Tailwind Shades

50
#F6F5F9
100
#E9E8F2
200
#D2D0E7
300
#B2AED5
400
#8883BF
500
#5E57A8
600
#4B4686
700
#3C386B
800
#2F2C54
900
#25233E
950
#171627

Contrast Checker

Text on white

5.68:1

AA Pass AAA Fail

Text on black

3.7:1

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