#040529

#040529

Color Values

HEX

#040529

RGB

4, 5, 41

HSL

238.4, 82.2%, 8.8%

HSV

238.4, 90.2%, 16.1%

CMYK

90.2%, 87.8%, 0.0%, 83.9%

OKLCH

0.1498 0.073 271.6

Properties

Cool Dark Nearest: RAL 5013 Cobalt Blue

Color Harmonies

Complementary

#040529

#292804

Analogous

#041729

#150429

#040529

Triadic

#040529

#290405

#052904

Split Complementary

#040529

#291504

#172904

Tetradic

#040529

#290417

#292804

#042915

Color Blindness Simulation

Original

#040529

Protanopia

#040420

Deuteranopia

#04041E

Tritanopia

#041918

Achromatopsia

#070707

CSS Usage

background-color: #040529;
color: #040529;
border-color: #040529;
Nearest Tailwind: Slate 900 #0F172A

Tailwind Shades

50
#F2F2FD
100
#E1E1FA
200
#BEC0F9
300
#8F92F4
400
#5357EE
500
#171CE8
600
#1217BA
700
#0F1295
800
#0B0E74
900
#0D0F54
950
#080935

Contrast Checker

Text on white

19.83:1

AA Pass AAA Pass

Text on black

1.06:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026