#645DCA

#645DCA

Color Values

HEX

#645DCA

RGB

100, 93, 202

HSL

243.9, 50.7%, 57.8%

HSV

243.9, 54.0%, 79.2%

CMYK

50.5%, 54.0%, 0.0%, 20.8%

OKLCH

0.5419 0.1638 282.3

Properties

Cool Dark Nearest: slateblue

Color Harmonies

Complementary

#645DCA

#C3CA5D

Analogous

#5D8CCA

#9A5DCA

#645DCA

Triadic

#645DCA

#CA645D

#5DCA64

Split Complementary

#645DCA

#CA9A5D

#8CCA5D

Tetradic

#645DCA

#CA5D8C

#C3CA5D

#5DCA9A

Color Blindness Simulation

Original

#645DCA

Protanopia

#6161B0

Deuteranopia

#6162A9

Tritanopia

#649B96

Achromatopsia

#666666

CSS Usage

background-color: #645DCA;
color: #645DCA;
border-color: #645DCA;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F4F4FB
100
#E6E5F5
200
#CCC9ED
300
#A7A3E1
400
#7771D0
500
#473FC0
600
#39329A
700
#2E287B
800
#241F60
900
#1D1A47
950
#12112D

Contrast Checker

Text on white

5.3:1

AA Pass AAA Fail

Text on black

3.96:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026