#2563FF

#2563FF

Color Values

HEX

#2563FF

RGB

37, 99, 255

HSL

222.9, 100.0%, 57.3%

HSV

222.9, 85.5%, 100.0%

CMYK

85.5%, 61.2%, 0.0%, 0.0%

OKLCH

0.5631 0.24 263.8

Properties

Cool Dark Nearest: royalblue 1

Color Harmonies

Complementary

#2563FF

#FFC125

Analogous

#25D0FF

#5425FF

#2563FF

Triadic

#2563FF

#FF2563

#63FF25

Split Complementary

#2563FF

#FF5425

#D0FF25

Tetradic

#2563FF

#FF25D0

#FFC125

#25FF54

Color Blindness Simulation

Original

#2563FF

Protanopia

#4040D9

Deuteranopia

#3C38D0

Tritanopia

#28BBB5

Achromatopsia

#616161

CSS Usage

background-color: #2563FF;
color: #2563FF;
border-color: #2563FF;
Nearest Tailwind: Blue 600 #2563EB

Tailwind Shades

50
#F1F5FE
100
#DEE7FC
200
#B8CCFF
300
#85A7FF
400
#4278FF
500
#0049FF
600
#003ACC
700
#002FA3
800
#002480
900
#051E5C
950
#03133A

Contrast Checker

Text on white

4.88:1

AA Pass AAA Fail

Text on black

4.31:1

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