#040A41

#040A41

Color Values

HEX

#040A41

RGB

4, 10, 65

HSL

234.1, 88.4%, 13.5%

HSV

234.1, 93.8%, 25.5%

CMYK

93.8%, 84.6%, 0.0%, 74.5%

OKLCH

0.193 0.1018 267.4

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#040A41

#413B04

Analogous

#042841

#1C0441

#040A41

Triadic

#040A41

#41040A

#0A4104

Split Complementary

#040A41

#411C04

#284104

Tetradic

#040A41

#410428

#413B04

#04411C

Color Blindness Simulation

Original

#040A41

Protanopia

#070734

Deuteranopia

#060630

Tritanopia

#042927

Achromatopsia

#0D0D0D

CSS Usage

background-color: #040A41;
color: #040A41;
border-color: #040A41;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F2F3FD
100
#E0E2FB
200
#BCC2FB
300
#8C96F8
400
#4D5EF4
500
#0F25F0
600
#0C1EC0
700
#09189A
800
#071278
900
#0A1157
950
#060B37

Contrast Checker

Text on white

18.67:1

AA Pass AAA Pass

Text on black

1.12:1

AA Fail AAA Fail

Related Articles

Tutorials

Building a Color Picker Web Component from Scratch

Feb 20, 2026
Tutorials

Web Color Performance: Gradients, Shadows, and Filters

Feb 19, 2026
Tutorials

Tailwind CSS Colors: Complete Shade System Guide

Feb 19, 2026