#28042F

#28042F

Color Values

HEX

#28042F

RGB

40, 4, 47

HSL

290.2, 84.3%, 10.0%

HSV

290.2, 91.5%, 18.4%

CMYK

14.9%, 91.5%, 0.0%, 81.6%

OKLCH

0.2067 0.0871 320.7

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#28042F

#0B2F04

Analogous

#12042F

#2F0421

#28042F

Triadic

#28042F

#2F2804

#042F28

Split Complementary

#28042F

#212F04

#042F12

Tetradic

#28042F

#2F1204

#0B2F04

#04212F

Color Blindness Simulation

Original

#28042F

Protanopia

#181825

Deuteranopia

#1A1D22

Tritanopia

#261C1B

Achromatopsia

#0F0F0F

CSS Usage

background-color: #28042F;
color: #28042F;
border-color: #28042F;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#FBF2FD
100
#F6E0FA
200
#F0BDF9
300
#E58EF5
400
#D651F0
500
#C814EB
600
#A010BC
700
#800D96
800
#640A75
900
#490C55
950
#2E0736

Contrast Checker

Text on white

18.28:1

AA Pass AAA Pass

Text on black

1.15:1

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