#288BEE

#288BEE

Color Values

HEX

#288BEE

RGB

40, 139, 238

HSL

210.0, 85.3%, 54.5%

HSV

210.0, 83.2%, 93.3%

CMYK

83.2%, 41.6%, 0.0%, 6.7%

OKLCH

0.632 0.1727 252.7

Properties

Cool Light Nearest: dodgerblue 2

Color Harmonies

Complementary

#288BEE

#EE8B28

Analogous

#28EEEE

#2828EE

#288BEE

Triadic

#288BEE

#EE288B

#8BEE28

Split Complementary

#288BEE

#EE2828

#EEEE28

Tetradic

#288BEE

#EE28EE

#EE8B28

#28EE28

Color Blindness Simulation

Original

#288BEE

Protanopia

#5354D6

Deuteranopia

#4D46D0

Tritanopia

#2DC3BF

Achromatopsia

#7D7D7D

CSS Usage

background-color: #288BEE;
color: #288BEE;
border-color: #288BEE;
Nearest Tailwind: Blue 500 #3B82F6

Tailwind Shades

50
#F2F7FD
100
#E0EDFA
200
#BDDBFA
300
#8EC2F6
400
#50A1F1
500
#1380EC
600
#0F66BD
700
#0C5297
800
#094076
900
#0B3056
950
#071F36

Contrast Checker

Text on white

3.49:1

AA Fail AAA Fail

Text on black

6.02:1

AA Pass 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