#645B40

#645B40

Color Values

HEX

#645B40

RGB

100, 91, 64

HSL

45.0, 22.0%, 32.2%

HSV

45.0, 36.0%, 39.2%

CMYK

0.0%, 9.0%, 36.0%, 60.8%

OKLCH

0.4724 0.0423 91.8

Properties

Warm Dark Nearest: RAL 7006 Beige Grey

Color Harmonies

Complementary

#645B40

#404964

Analogous

#644940

#5B6440

#645B40

Triadic

#645B40

#40645B

#5B4064

Split Complementary

#645B40

#405B64

#494064

Tetradic

#645B40

#406449

#404964

#64405B

Color Blindness Simulation

Original

#645B40

Protanopia

#606047

Deuteranopia

#616148

Tritanopia

#644C4D

Achromatopsia

#5B5B5B

CSS Usage

background-color: #645B40;
color: #645B40;
border-color: #645B40;
Nearest Tailwind: Stone 600 #57534E

Tailwind Shades

50
#F9F8F6
100
#F0EFEA
200
#E3DFD3
300
#CFC9B4
400
#B5AB8C
500
#9C8E63
600
#7C7150
700
#645B40
800
#4E4732
900
#3A3527
950
#252219

Contrast Checker

Text on white

6.75:1

AA Pass AAA Fail

Text on black

3.11:1

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