#040E39

#040E39

Color Values

HEX

#040E39

RGB

4, 14, 57

HSL

228.7, 86.9%, 12.0%

HSV

228.7, 93.0%, 22.4%

CMYK

93.0%, 75.4%, 0.0%, 77.6%

OKLCH

0.191 0.0846 266.2

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#040E39

#392F04

Analogous

#042939

#150439

#040E39

Triadic

#040E39

#39040E

#0E3904

Split Complementary

#040E39

#391504

#293904

Tetradic

#040E39

#390429

#392F04

#043915

Color Blindness Simulation

Original

#040E39

Protanopia

#08082F

Deuteranopia

#08072C

Tritanopia

#042625

Achromatopsia

#0F0F0F

CSS Usage

background-color: #040E39;
color: #040E39;
border-color: #040E39;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F2F4FD
100
#E0E5FA
200
#BCC8FA
300
#8DA1F7
400
#4F6EF3
500
#113AEE
600
#0D2FBF
700
#0B2599
800
#081D77
900
#0B1956
950
#071037

Contrast Checker

Text on white

18.63:1

AA Pass AAA Pass

Text on black

1.13:1

AA Fail AAA Fail

Related Articles

Color Questions

What Is Pantone? The Universal Color Language

Feb 20, 2026
Color Questions

What Is Metamerism? Why Colors Look Different Under Different Lights

Feb 20, 2026
Color Questions

What Is Luminance? Brightness in Color Science

Feb 20, 2026