#404550

#404550

Color Values

HEX

#404550

RGB

64, 69, 80

HSL

221.2, 11.1%, 28.2%

HSV

221.2, 20.0%, 31.4%

CMYK

20.0%, 13.8%, 0.0%, 68.6%

OKLCH

0.3901 0.0198 266.0

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#404550

#504B40

Analogous

#404D50

#434050

#404550

Triadic

#404550

#504045

#455040

Split Complementary

#404550

#504340

#4D5040

Tetradic

#404550

#50404D

#504B40

#405043

Color Blindness Simulation

Original

#404550

Protanopia

#42424D

Deuteranopia

#42424D

Tritanopia

#404B4B

Achromatopsia

#454545

CSS Usage

background-color: #404550;
color: #404550;
border-color: #404550;
Nearest Tailwind: Zinc 700 #3F3F46

Tailwind Shades

50
#F7F7F8
100
#EBEDEF
200
#D7DADF
300
#BBBFC9
400
#969DAB
500
#717A8E
600
#5B6271
700
#494E5B
800
#393D47
900
#2C2F35
950
#1C1D22

Contrast Checker

Text on white

9.61:1

AA Pass AAA Pass

Text on black

2.19:1

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