#646C4D

#646C4D

Color Values

HEX

#646C4D

RGB

100, 108, 77

HSL

75.5, 16.8%, 36.3%

HSV

75.5, 28.7%, 42.4%

CMYK

7.4%, 0.0%, 28.7%, 57.6%

OKLCH

0.5157 0.0476 119.8

Properties

Cool Dark Nearest: RAL 6013 Reed Green

Color Harmonies

Complementary

#646C4D

#554D6C

Analogous

#6C654D

#556C4D

#646C4D

Triadic

#646C4D

#4D646C

#6C4D64

Split Complementary

#646C4D

#4D556C

#654D6C

Tetradic

#646C4D

#4D6C65

#554D6C

#6C4D55

Color Blindness Simulation

Original

#646C4D

Protanopia

#676854

Deuteranopia

#676656

Tritanopia

#645A5C

Achromatopsia

#686868

CSS Usage

background-color: #646C4D;
color: #646C4D;
border-color: #646C4D;
Nearest Tailwind: Stone 500 #78716C

Tailwind Shades

50
#F8F8F6
100
#EEF0EB
200
#DEE1D5
300
#C7CCB8
400
#A8B191
500
#8A956A
600
#6E7755
700
#585F44
800
#454A35
900
#343829
950
#21231A

Contrast Checker

Text on white

5.53:1

AA Pass AAA Fail

Text on black

3.79:1

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