#645BC6

#645BC6

Color Values

HEX

#645BC6

RGB

100, 91, 198

HSL

245.0, 48.4%, 56.7%

HSV

245.0, 54.0%, 77.6%

CMYK

49.5%, 54.0%, 0.0%, 22.4%

OKLCH

0.5355 0.1611 283.3

Properties

Cool Dark Nearest: slateblue

Color Harmonies

Complementary

#645BC6

#BDC65B

Analogous

#5B88C6

#995BC6

#645BC6

Triadic

#645BC6

#C6645B

#5BC664

Split Complementary

#645BC6

#C6995B

#88C65B

Tetradic

#645BC6

#C65B88

#BDC65B

#5BC699

Color Blindness Simulation

Original

#645BC6

Protanopia

#6060AC

Deuteranopia

#6161A6

Tritanopia

#649893

Achromatopsia

#656565

CSS Usage

background-color: #645BC6;
color: #645BC6;
border-color: #645BC6;
Nearest Tailwind: Blue 800 #1E40AF

Tailwind Shades

50
#F5F4FA
100
#E7E6F4
200
#CDCAED
300
#A9A4DF
400
#7B73CE
500
#4C42BD
600
#3D3597
700
#312A79
800
#26215F
900
#1F1B46
950
#13112C

Contrast Checker

Text on white

5.45:1

AA Pass AAA Fail

Text on black

3.85:1

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