#424554

#424554

Color Values

HEX

#424554

RGB

66, 69, 84

HSL

230,0, 12,0%, 29,4%

HSV

230,0, 21,4%, 32,9%

CMYK

21,4%, 17,9%, 0,0%, 67,1%

OKLCH

0,3936 0,0256 276,3

Properties

Cool Dark Nearest: RAL 7015 Slate Grey

Color Harmonies

Complementary

#424554

#545142

Analogous

#424E54

#484254

#424554

Triadic

#424554

#544245

#455442

Split Complementary

#424554

#544842

#4E5442

Tetradic

#424554

#54424E

#545142

#425448

Color Blindness Simulation

Original

#424554

Protanopia

#434350

Deuteranopia

#434350

Tritanopia

#424E4D

Achromatopsia

#454545

CSS Usage

background-color: #424554;
color: #424554;
border-color: #424554;
Nearest Tailwind: Gray 700 #374151

Tailwind Shades

50
#F7F7F8
100
#EBECEF
200
#D7D8E0
300
#BABDC9
400
#9599AC
500
#70758F
600
#5A5E72
700
#484B5B
800
#383B47
900
#2B2D36
950
#1B1C22

Contrast Checker

Text on white

9,5:1

AA Pass AAA Pass

Text on black

2,21:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026