#28012B

#28012B

Color Values

HEX

#28012B

RGB

40, 1, 43

HSL

295.7, 95.5%, 8.6%

HSV

295.7, 97.7%, 16.9%

CMYK

7.0%, 97.7%, 0.0%, 83.1%

OKLCH

0.1985 0.0896 325.1

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#28012B

#042B01

Analogous

#13012B

#2B0119

#28012B

Triadic

#28012B

#2B2801

#012B28

Split Complementary

#28012B

#192B01

#012B13

Tetradic

#28012B

#2B1301

#042B01

#01192B

Color Blindness Simulation

Original

#28012B

Protanopia

#171721

Deuteranopia

#191C1E

Tritanopia

#261917

Achromatopsia

#0C0C0C

CSS Usage

background-color: #28012B;
color: #28012B;
border-color: #28012B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#FDF1FE
100
#FADFFC
200
#F9B9FD
300
#F487FC
400
#EE47FB
500
#E806F9
600
#B905C7
700
#9404A0
800
#74037D
900
#54075A
950
#350439

Contrast Checker

Text on white

18.59:1

AA Pass AAA Pass

Text on black

1.13:1

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