#040223

#040223

Color Values

HEX

#040223

RGB

4, 2, 35

HSL

243,6, 89,2%, 7,3%

HSV

243,6, 94,3%, 13,7%

CMYK

88,6%, 94,3%, 0,0%, 86,3%

OKLCH

0,1315 0,0705 275,6

Properties

Cool Dark Nearest: RAL 5003 Sapphire Blue

Color Harmonies

Complementary

#040223

#212302

Analogous

#021123

#150223

#040223

Triadic

#040223

#230402

#022304

Split Complementary

#040223

#231502

#112302

Tetradic

#040223

#230211

#212302

#022315

Color Blindness Simulation

Original

#040223

Protanopia

#03031B

Deuteranopia

#030319

Tritanopia

#041513

Achromatopsia

#050505

CSS Usage

background-color: #040223;
color: #040223;
border-color: #040223;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F2F2FD
100
#E1E0FB
200
#BFBBFB
300
#928BF8
400
#574CF5
500
#1B0EF1
600
#160BC1
700
#12099A
800
#0E0779
900
#0E0A57
950
#090637

Contrast Checker

Text on white

20,23:1

AA Pass AAA Pass

Text on black

1,04:1

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