#646F54

#646F54

Color Values

HEX

#646F54

RGB

100, 111, 84

HSL

84.4, 13.8%, 38.2%

HSV

84.4, 24.3%, 43.5%

CMYK

9.9%, 0.0%, 24.3%, 56.5%

OKLCH

0.5246 0.043 125.9

Properties

Cool Dark Nearest: RAL 6013 Reed Green

Color Harmonies

Complementary

#646F54

#5F546F

Analogous

#6F6C54

#566F54

#646F54

Triadic

#646F54

#54646F

#6F5464

Split Complementary

#646F54

#54566F

#6C546F

Tetradic

#646F54

#546F6C

#5F546F

#6F5456

Color Blindness Simulation

Original

#646F54

Protanopia

#69695B

Deuteranopia

#68675C

Tritanopia

#656061

Achromatopsia

#6B6B6B

CSS Usage

background-color: #646F54;
color: #646F54;
border-color: #646F54;
Nearest Tailwind: Stone 500 #78716C

Tailwind Shades

50
#F8F8F6
100
#EEEFEB
200
#DCE0D6
300
#C3CAB9
400
#A3AE94
500
#83916E
600
#697458
700
#545D46
800
#414937
900
#32362A
950
#1F221B

Contrast Checker

Text on white

5.33:1

AA Pass AAA Fail

Text on black

3.94:1

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