#645F8F

#645F8F

Color Values

HEX

#645F8F

RGB

100, 95, 143

HSL

246.3, 20.2%, 46.7%

HSV

246.3, 33.6%, 56.1%

CMYK

30.1%, 33.6%, 0.0%, 43.9%

OKLCH

0.5101 0.0754 288.2

Properties

Cool Dark Nearest: RAL 4011 Pearl Violet

Color Harmonies

Complementary

#645F8F

#8A8F5F

Analogous

#5F728F

#7C5F8F

#645F8F

Triadic

#645F8F

#8F645F

#5F8F64

Split Complementary

#645F8F

#8F7C5F

#728F5F

Tetradic

#645F8F

#8F5F72

#8A8F5F

#5F8F7C

Color Blindness Simulation

Original

#645F8F

Protanopia

#626283

Deuteranopia

#626281

Tritanopia

#647A78

Achromatopsia

#646464

CSS Usage

background-color: #645F8F;
color: #645F8F;
border-color: #645F8F;
Nearest Tailwind: Slate 500 #64748B

Tailwind Shades

50
#F6F6F9
100
#EBEAF0
200
#D6D4E3
300
#B8B5CE
400
#928EB4
500
#6B6699
600
#56517B
700
#454162
800
#36334D
900
#292839
950
#1A1924

Contrast Checker

Text on white

5.87:1

AA Pass AAA Fail

Text on black

3.58:1

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