#280C3F

#280C3F

Color Values

HEX

#280C3F

RGB

40, 12, 63

HSL

272,9, 68,0%, 14,7%

HSV

272,9, 81,0%, 24,7%

CMYK

36,5%, 81,0%, 0,0%, 75,3%

OKLCH

0,2319 0,0926 305,3

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#280C3F

#233F0C

Analogous

#0E0C3F

#3F0C3D

#280C3F

Triadic

#280C3F

#3F280C

#0C3F28

Split Complementary

#280C3F

#3D3F0C

#0C3F0E

Tetradic

#280C3F

#3F0E0C

#233F0C

#0C3D3F

Color Blindness Simulation

Original

#280C3F

Protanopia

#1C1C33

Deuteranopia

#1E2030

Tritanopia

#272927

Achromatopsia

#161616

CSS Usage

background-color: #280C3F;
color: #280C3F;
border-color: #280C3F;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F8F3FC
100
#EEE3F7
200
#DEC3F4
300
#C698EB
400
#A760E1
500
#8829D6
600
#6D21AB
700
#571A89
800
#44146B
900
#33134E
950
#200C31

Contrast Checker

Text on white

17,29:1

AA Pass AAA Pass

Text on black

1,21:1

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