#646B7C

#646B7C

Color Values

HEX

#646B7C

RGB

100, 107, 124

HSL

222.5, 10.7%, 43.9%

HSV

222.5, 19.4%, 48.6%

CMYK

19.4%, 13.7%, 0.0%, 51.4%

OKLCH

0.5279 0.0281 267.7

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#646B7C

#7C7564

Analogous

#64777C

#69647C

#646B7C

Triadic

#646B7C

#7C646B

#6B7C64

Split Complementary

#646B7C

#7C6964

#777C64

Tetradic

#646B7C

#7C6477

#7C7564

#647C69

Color Blindness Simulation

Original

#646B7C

Protanopia

#676778

Deuteranopia

#676677

Tritanopia

#647574

Achromatopsia

#6B6B6B

CSS Usage

background-color: #646B7C;
color: #646B7C;
border-color: #646B7C;
Nearest Tailwind: Gray 500 #6B7280

Tailwind Shades

50
#F7F7F8
100
#ECECEF
200
#D7DADF
300
#BBBFC8
400
#979CAB
500
#727A8D
600
#5B6171
700
#494E5A
800
#393D47
900
#2C2F35
950
#1C1D22

Contrast Checker

Text on white

5.34:1

AA Pass AAA Fail

Text on black

3.94:1

AA Fail AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026