#05285B

#05285B

Color Values

HEX

#05285B

RGB

5, 40, 91

HSL

215.6, 89.6%, 18.8%

HSV

215.6, 94.5%, 35.7%

CMYK

94.5%, 56.0%, 0.0%, 64.3%

OKLCH

0.2879 0.0998 258.7

Properties

Cool Dark Nearest: RAL 5002 Ultramarine Blue

Color Harmonies

Complementary

#05285B

#5B3805

Analogous

#05535B

#0D055B

#05285B

Triadic

#05285B

#5B0528

#285B05

Split Complementary

#05285B

#5B0D05

#535B05

Tetradic

#05285B

#5B0553

#5B3805

#055B0D

Color Blindness Simulation

Original

#05285B

Protanopia

#14144F

Deuteranopia

#12104C

Tritanopia

#074543

Achromatopsia

#242424

CSS Usage

background-color: #05285B;
color: #05285B;
border-color: #05285B;
Nearest Tailwind: Blue 950 #172554

Tailwind Shades

50
#F2F6FD
100
#E0EBFB
200
#BBD5FB
300
#8BB8F9
400
#4C91F5
500
#0D6AF2
600
#0B55C1
700
#08449B
800
#073579
900
#092958
950
#061A37

Contrast Checker

Text on white

14.37:1

AA Pass AAA Pass

Text on black

1.46:1

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