#643A40

#643A40

Color Values

HEX

#643A40

RGB

100, 58, 64

HSL

351.4, 26.6%, 31.0%

HSV

351.4, 42.0%, 39.2%

CMYK

0.0%, 42.0%, 36.0%, 60.8%

OKLCH

0.4013 0.0599 10.9

Properties

Warm Dark Nearest: RAL 8015 Chestnut Brown

Color Harmonies

Complementary

#643A40

#3A645E

Analogous

#643A55

#64493A

#643A40

Triadic

#643A40

#40643A

#3A4064

Split Complementary

#643A40

#3A6449

#3A5564

Tetradic

#643A40

#55643A

#3A645E

#493A64

Color Blindness Simulation

Original

#643A40

Protanopia

#52513F

Deuteranopia

#54573E

Tritanopia

#623D3D

Achromatopsia

#434343

CSS Usage

background-color: #643A40;
color: #643A40;
border-color: #643A40;
Nearest Tailwind: Stone 700 #44403C

Tailwind Shades

50
#F9F6F6
100
#F1E9EA
200
#E5D2D5
300
#D2B2B6
400
#BA888F
500
#A15E67
600
#814B53
700
#673C42
800
#512F34
900
#3C2528
950
#261719

Contrast Checker

Text on white

9.45:1

AA Pass AAA Pass

Text on black

2.22:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026