#04103B

#04103B

Color Values

HEX

#04103B

RGB

4, 16, 59

HSL

226.9, 87.3%, 12.4%

HSV

226.9, 93.2%, 23.1%

CMYK

93.2%, 72.9%, 0.0%, 76.9%

OKLCH

0.1978 0.0849 265.4

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#04103B

#3B2F04

Analogous

#042C3B

#14043B

#04103B

Triadic

#04103B

#3B0410

#103B04

Split Complementary

#04103B

#3B1404

#2C3B04

Tetradic

#04103B

#3B042C

#3B2F04

#043B14

Color Blindness Simulation

Original

#04103B

Protanopia

#090931

Deuteranopia

#08082E

Tritanopia

#052827

Achromatopsia

#111111

CSS Usage

background-color: #04103B;
color: #04103B;
border-color: #04103B;
Nearest Tailwind: Indigo 950 #1E1B4B

Tailwind Shades

50
#F2F4FD
100
#E0E6FA
200
#BCCAFA
300
#8CA4F7
400
#4E72F3
500
#1041EF
600
#0D34BF
700
#0A2999
800
#082077
900
#0A1B57
950
#071137

Contrast Checker

Text on white

18.38:1

AA Pass AAA Pass

Text on black

1.14:1

AA Fail AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026