#281A39

#281A39

Color Values

HEX

#281A39

RGB

40, 26, 57

HSL

267.1, 37.3%, 16.3%

HSV

267.1, 54.4%, 22.4%

CMYK

29.8%, 54.4%, 0.0%, 77.6%

OKLCH

0.2518 0.059 303.3

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#281A39

#2B391A

Analogous

#1A1C39

#381A39

#281A39

Triadic

#281A39

#39281A

#1A3928

Split Complementary

#281A39

#39381A

#1C391A

Tetradic

#281A39

#391A1C

#2B391A

#1A3938

Color Blindness Simulation

Original

#281A39

Protanopia

#222232

Deuteranopia

#232430

Tritanopia

#272C2A

Achromatopsia

#1F1F1F

CSS Usage

background-color: #281A39;
color: #281A39;
border-color: #281A39;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F7F5FA
100
#EDE7F3
200
#DACEE9
300
#C0ABD9
400
#9D7DC4
500
#7B50AF
600
#62408C
700
#4F3370
800
#3D2858
900
#2F2041
950
#1E1429

Contrast Checker

Text on white

16.19:1

AA Pass AAA Pass

Text on black

1.3:1

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