#646CBA

#646CBA

Color Values

HEX

#646CBA

RGB

100, 108, 186

HSL

234.4, 38.4%, 56.1%

HSV

234.4, 46.2%, 72.9%

CMYK

46.2%, 41.9%, 0.0%, 27.1%

OKLCH

0.5605 0.1203 277.3

Properties

Cool Dark Nearest: Indigo

Color Harmonies

Complementary

#646CBA

#BAB264

Analogous

#6497BA

#8764BA

#646CBA

Triadic

#646CBA

#BA646C

#6CBA64

Split Complementary

#646CBA

#BA8764

#97BA64

Tetradic

#646CBA

#BA6497

#BAB264

#64BA87

Color Blindness Simulation

Original

#646CBA

Protanopia

#6768A7

Deuteranopia

#6766A3

Tritanopia

#649895

Achromatopsia

#707070

CSS Usage

background-color: #646CBA;
color: #646CBA;
border-color: #646CBA;
Nearest Tailwind: Indigo 400 #818CF8

Tailwind Shades

50
#F5F5FA
100
#E7E8F3
200
#CED0E9
300
#AAAFD9
400
#7C83C5
500
#4F58B0
600
#3F468D
700
#323871
800
#272C58
900
#202341
950
#141629

Contrast Checker

Text on white

4.78:1

AA Pass AAA Fail

Text on black

4.4:1

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