#040F41

#040F41

Color Values

HEX

#040F41

RGB

4, 15, 65

HSL

229.2, 88.4%, 13.5%

HSV

229.2, 93.8%, 25.5%

CMYK

93.8%, 76.9%, 0.0%, 74.5%

OKLCH

0.2027 0.0955 266.1

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#040F41

#413604

Analogous

#042D41

#170441

#040F41

Triadic

#040F41

#41040F

#0F4104

Split Complementary

#040F41

#411704

#2D4104

Tetradic

#040F41

#41042D

#413604

#044117

Color Blindness Simulation

Original

#040F41

Protanopia

#090935

Deuteranopia

#080732

Tritanopia

#052B29

Achromatopsia

#101010

CSS Usage

background-color: #040F41;
color: #040F41;
border-color: #040F41;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F2F4FD
100
#E0E5FB
200
#BCC7FB
300
#8C9FF8
400
#4D6BF4
500
#0F37F0
600
#0C2CC0
700
#09239A
800
#071C78
900
#0A1857
950
#060F37

Contrast Checker

Text on white

18.26:1

AA Pass AAA Pass

Text on black

1.15:1

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