#284573

#284573

Color Values

HEX

#284573

RGB

40, 69, 115

HSL

216.8, 48.4%, 30.4%

HSV

216.8, 65.2%, 45.1%

CMYK

65.2%, 40.0%, 0.0%, 54.9%

OKLCH

0.3917 0.0859 259.3

Properties

Cool Dark Nearest: Midnight Blue

Color Harmonies

Complementary

#284573

#735628

Analogous

#286B73

#312873

#284573

Triadic

#284573

#732845

#457328

Split Complementary

#284573

#733128

#6B7328

Tetradic

#284573

#73286B

#735628

#287331

Color Blindness Simulation

Original

#284573

Protanopia

#353568

Deuteranopia

#333165

Tritanopia

#295F5D

Achromatopsia

#424242

CSS Usage

background-color: #284573;
color: #284573;
border-color: #284573;
Nearest Tailwind: Sky 900 #0C4A6E

Tailwind Shades

50
#F4F7FA
100
#E6EBF4
200
#CAD7ED
300
#A4BBDF
400
#7396CE
500
#4272BD
600
#355B97
700
#2A4979
800
#21395F
900
#1B2C46
950
#111C2C

Contrast Checker

Text on white

9.59:1

AA Pass AAA Pass

Text on black

2.19:1

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