#040C3B

#040C3B

Color Values

HEX

#040C3B

RGB

4, 12, 59

HSL

231.3, 87.3%, 12.4%

HSV

231.3, 93.2%, 23.1%

CMYK

93.2%, 79.7%, 0.0%, 76.9%

OKLCH

0.1891 0.0904 267.0

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#040C3B

#3B3304

Analogous

#04283B

#18043B

#040C3B

Triadic

#040C3B

#3B040C

#0C3B04

Split Complementary

#040C3B

#3B1804

#283B04

Tetradic

#040C3B

#3B0428

#3B3304

#043B18

Color Blindness Simulation

Original

#040C3B

Protanopia

#070830

Deuteranopia

#07062D

Tritanopia

#042725

Achromatopsia

#0E0E0E

CSS Usage

background-color: #040C3B;
color: #040C3B;
border-color: #040C3B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F2F3FD
100
#E0E4FA
200
#BCC5FA
300
#8C9CF7
400
#4E66F3
500
#1030EF
600
#0D27BF
700
#0A1F99
800
#081877
900
#0A1557
950
#070E37

Contrast Checker

Text on white

18.73:1

AA Pass AAA Pass

Text on black

1.12:1

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