#644F8B

#644F8B

Color Values

HEX

#644F8B

RGB

100, 79, 139

HSL

261.0, 27.5%, 42.7%

HSV

261.0, 43.2%, 54.5%

CMYK

28.1%, 43.2%, 0.0%, 45.5%

OKLCH

0.4757 0.0966 298.8

Properties

Cool Dark Nearest: mediumpurple 4

Color Harmonies

Complementary

#644F8B

#768B4F

Analogous

#4F588B

#824F8B

#644F8B

Triadic

#644F8B

#8B644F

#4F8B64

Split Complementary

#644F8B

#8B824F

#588B4F

Tetradic

#644F8B

#8B4F58

#768B4F

#4F8B82

Color Blindness Simulation

Original

#644F8B

Protanopia

#5B5B7C

Deuteranopia

#5C5E79

Tritanopia

#63716E

Achromatopsia

#585858

CSS Usage

background-color: #644F8B;
color: #644F8B;
border-color: #644F8B;
Nearest Tailwind: Blue 900 #1E3A8A

Tailwind Shades

50
#F7F6F9
100
#ECE9F1
200
#D8D1E5
300
#BDB1D3
400
#9987BB
500
#755CA3
600
#5E4A82
700
#4B3B68
800
#3A2E51
900
#2D243C
950
#1C1726

Contrast Checker

Text on white

6.92:1

AA Pass AAA Fail

Text on black

3.03:1

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