#646AB5

#646AB5

Color Values

HEX

#646AB5

RGB

100, 106, 181

HSL

235.6, 35.4%, 55.1%

HSV

235.6, 44.8%, 71.0%

CMYK

44.8%, 41.4%, 0.0%, 29.0%

OKLCH

0.5535 0.1158 278.4

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#646AB5

#B5AF64

Analogous

#6492B5

#8764B5

#646AB5

Triadic

#646AB5

#B5646A

#6AB564

Split Complementary

#646AB5

#B58764

#92B564

Tetradic

#646AB5

#B56492

#B5AF64

#64B587

Color Blindness Simulation

Original

#646AB5

Protanopia

#6767A3

Deuteranopia

#66669E

Tritanopia

#649591

Achromatopsia

#6E6E6E

CSS Usage

background-color: #646AB5;
color: #646AB5;
border-color: #646AB5;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F5F5FA
100
#E8E9F3
200
#CFD1E8
300
#ACAFD7
400
#7F84C2
500
#5259AD
600
#42478A
700
#35396E
800
#292C56
900
#212340
950
#151628

Contrast Checker

Text on white

4.92:1

AA Pass AAA Fail

Text on black

4.27:1

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