#646975

#646975

Color Values

HEX

#646975

RGB

100, 105, 117

HSL

222.4, 7.8%, 42.5%

HSV

222.4, 14.5%, 45.9%

CMYK

14.5%, 10.3%, 0.0%, 54.1%

OKLCH

0.5207 0.0199 267.6

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#646975

#757064

Analogous

#647175

#676475

#646975

Triadic

#646975

#756469

#697564

Split Complementary

#646975

#756764

#717564

Tetradic

#646975

#756471

#757064

#647567

Color Blindness Simulation

Original

#646975

Protanopia

#666672

Deuteranopia

#666671

Tritanopia

#64706F

Achromatopsia

#696969

CSS Usage

background-color: #646975;
color: #646975;
border-color: #646975;
Nearest Tailwind: Gray 500 #6B7280

Tailwind Shades

50
#F7F7F8
100
#ECEDEE
200
#D9DADE
300
#BDC0C7
400
#999EA8
500
#767B89
600
#5E636E
700
#4B4F58
800
#3B3E45
900
#2D2F34
950
#1C1E21

Contrast Checker

Text on white

5.5:1

AA Pass AAA Fail

Text on black

3.82:1

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