#040545

#040545

Color Values

HEX

#040545

RGB

4, 5, 69

HSL

239.1, 89.0%, 14.3%

HSV

239.1, 94.2%, 27.1%

CMYK

94.2%, 92.8%, 0.0%, 72.9%

OKLCH

0.1896 0.1133 267.9

Properties

Cool Dark Nearest: RAL 5005 Signal Blue

Color Harmonies

Complementary

#040545

#454404

Analogous

#042545

#230445

#040545

Triadic

#040545

#450405

#054504

Split Complementary

#040545

#452304

#254504

Tetradic

#040545

#450425

#454404

#044523

Color Blindness Simulation

Original

#040545

Protanopia

#040436

Deuteranopia

#040432

Tritanopia

#042927

Achromatopsia

#090909

CSS Usage

background-color: #040545;
color: #040545;
border-color: #040545;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F2F2FD
100
#E0E0FB
200
#BCBCFB
300
#8B8DF8
400
#4D4FF5
500
#0E11F1
600
#0B0EC1
700
#090B9A
800
#070978
900
#0A0B57
950
#060737

Contrast Checker

Text on white

18.87:1

AA Pass AAA Pass

Text on black

1.11:1

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