#404C57

#404C57

Color Values

HEX

#404C57

RGB

64, 76, 87

HSL

208.7, 15.2%, 29.6%

HSV

208.7, 26.4%, 34.1%

CMYK

26.4%, 12.6%, 0.0%, 65.9%

OKLCH

0.4103 0.0241 246.1

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#404C57

#574B40

Analogous

#405756

#404157

#404C57

Triadic

#404C57

#57404C

#4C5740

Split Complementary

#404C57

#574041

#575640

Tetradic

#404C57

#564057

#574B40

#415740

Color Blindness Simulation

Original

#404C57

Protanopia

#454554

Deuteranopia

#444454

Tritanopia

#415252

Achromatopsia

#4A4A4A

CSS Usage

background-color: #404C57;
color: #404C57;
border-color: #404C57;
Nearest Tailwind: Gray 600 #4B5563

Tailwind Shades

50
#F6F7F8
100
#EBEDEF
200
#D6DCE1
300
#B8C2CB
400
#92A1AF
500
#6C8093
600
#566776
700
#45525E
800
#364049
900
#2A3137
950
#1A1F23

Contrast Checker

Text on white

8.79:1

AA Pass AAA Pass

Text on black

2.39:1

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