#644B40

#644B40

Color Values

HEX

#644B40

RGB

100, 75, 64

HSL

18.3, 22.0%, 32.2%

HSV

18.3, 36.0%, 39.2%

CMYK

0.0%, 25.0%, 36.0%, 60.8%

OKLCH

0.4362 0.0385 44.9

Properties

Warm Dark Nearest: RAL 8028 Terra Brown

Color Harmonies

Complementary

#644B40

#405964

Analogous

#644047

#645D40

#644B40

Triadic

#644B40

#40644B

#4B4064

Split Complementary

#644B40

#40645D

#404764

Tetradic

#644B40

#476440

#405964

#5D4064

Color Blindness Simulation

Original

#644B40

Protanopia

#595943

Deuteranopia

#5B5C43

Tritanopia

#634545

Achromatopsia

#505050

CSS Usage

background-color: #644B40;
color: #644B40;
border-color: #644B40;
Nearest Tailwind: Stone 600 #57534E

Tailwind Shades

50
#F9F7F6
100
#F0ECEA
200
#E3D8D3
300
#CFBDB4
400
#B5998C
500
#9C7563
600
#7C5D50
700
#644B40
800
#4E3A32
900
#3A2D27
950
#251C19

Contrast Checker

Text on white

8.01:1

AA Pass AAA Pass

Text on black

2.62:1

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