#644C47

#644C47

Color Values

HEX

#644C47

RGB

100, 76, 71

HSL

10.3, 17.0%, 33.5%

HSV

10.3, 29.0%, 39.2%

CMYK

0.0%, 24.0%, 29.0%, 60.8%

OKLCH

0.4403 0.0338 31.9

Properties

Warm Dark Nearest: RAL 8028 Terra Brown

Color Harmonies

Complementary

#644C47

#475F64

Analogous

#644750

#645A47

#644C47

Triadic

#644C47

#47644C

#4C4764

Split Complementary

#644C47

#47645A

#475064

Tetradic

#644C47

#506447

#475F64

#5A4764

Color Blindness Simulation

Original

#644C47

Protanopia

#5A5948

Deuteranopia

#5B5D48

Tritanopia

#634949

Achromatopsia

#515151

CSS Usage

background-color: #644C47;
color: #644C47;
border-color: #644C47;
Nearest Tailwind: Stone 600 #57534E

Tailwind Shades

50
#F8F7F6
100
#F0EBEB
200
#E1D7D5
300
#CCBBB7
400
#B19691
500
#95716A
600
#775B55
700
#5F4844
800
#4B3935
900
#382C29
950
#231C1A

Contrast Checker

Text on white

7.88:1

AA Pass AAA Pass

Text on black

2.67:1

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