#646178

#646178

Color Values

HEX

#646178

RGB

100, 97, 120

HSL

247.8, 10.6%, 42.5%

HSV

247.8, 19.2%, 47.1%

CMYK

16.7%, 19.2%, 0.0%, 52.9%

OKLCH

0.5039 0.0363 291.0

Properties

Cool Dark Nearest: RAL 4012 Pearl Blackberry

Color Harmonies

Complementary

#646178

#757861

Analogous

#616978

#6F6178

#646178

Triadic

#646178

#786461

#617864

Split Complementary

#646178

#786F61

#697861

Tetradic

#646178

#786169

#757861

#61786F

Color Blindness Simulation

Original

#646178

Protanopia

#636372

Deuteranopia

#636371

Tritanopia

#646E6D

Achromatopsia

#636363

CSS Usage

background-color: #646178;
color: #646178;
border-color: #646178;
Nearest Tailwind: Gray 500 #6B7280

Tailwind Shades

50
#F7F7F8
100
#ECECEF
200
#D8D8DF
300
#BDBBC8
400
#9997AB
500
#75728D
600
#5E5B71
700
#4B495A
800
#3B3947
900
#2D2C35
950
#1C1C22

Contrast Checker

Text on white

5.96:1

AA Pass AAA Fail

Text on black

3.52:1

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