#646ACF

#646ACF

Color Values

HEX

#646ACF

RGB

100, 106, 207

HSL

236.6, 52.7%, 60.2%

HSV

236.6, 51.7%, 81.2%

CMYK

51.7%, 48.8%, 0.0%, 18.8%

OKLCH

0.5695 0.153 277.8

Properties

Cool Dark Nearest: NCS S 1050-R90B Blue Violet

Color Harmonies

Complementary

#646ACF

#CFC964

Analogous

#64A0CF

#9364CF

#646ACF

Triadic

#646ACF

#CF646A

#6ACF64

Split Complementary

#646ACF

#CF9364

#A0CF64

Tetradic

#646ACF

#CF64A0

#CFC964

#64CF93

Color Blindness Simulation

Original

#646ACF

Protanopia

#6767B7

Deuteranopia

#6666B1

Tritanopia

#64A39F

Achromatopsia

#707070

CSS Usage

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

Tailwind Shades

50
#F4F4FB
100
#E5E6F5
200
#C8CBEE
300
#A2A5E2
400
#6F75D2
500
#3C44C3
600
#30369C
700
#272B7D
800
#1E2261
900
#191C47
950
#10122D

Contrast Checker

Text on white

4.66:1

AA Pass AAA Fail

Text on black

4.5:1

AA Pass 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