#280839

#280839

Color Values

HEX

#280839

RGB

40, 8, 57

HSL

279.2, 75.4%, 12.7%

HSV

279.2, 86.0%, 22.4%

CMYK

29.8%, 86.0%, 0.0%, 77.6%

OKLCH

0.2212 0.0911 310.9

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#280839

#193908

Analogous

#0F0839

#390831

#280839

Triadic

#280839

#392808

#083928

Split Complementary

#280839

#313908

#08390F

Tetradic

#280839

#390F08

#193908

#083139

Color Blindness Simulation

Original

#280839

Protanopia

#1A1A2D

Deuteranopia

#1C1E2A

Tritanopia

#262422

Achromatopsia

#121212

CSS Usage

background-color: #280839;
color: #280839;
border-color: #280839;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F9F2FC
100
#F1E2F9
200
#E4C0F6
300
#D094F0
400
#B65AE8
500
#9D1FE0
600
#7E19B3
700
#64148F
800
#4E1070
900
#3B1051
950
#250A33

Contrast Checker

Text on white

17.74:1

AA Pass AAA Pass

Text on black

1.18:1

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