#4288CF

#4288CF

Color Values

HEX

#4288CF

RGB

66, 136, 207

HSL

210.2, 59.5%, 53.5%

HSV

210.2, 68.1%, 81.2%

CMYK

68.1%, 34.3%, 0.0%, 18.8%

OKLCH

0.6145 0.1292 251.0

Properties

Cool Light Nearest: RAL 5012 Light Blue

Color Harmonies

Complementary

#4288CF

#CF8942

Analogous

#42CFCF

#4242CF

#4288CF

Triadic

#4288CF

#CF4288

#88CF42

Split Complementary

#4288CF

#CF4242

#CFCF42

Tetradic

#4288CF

#CF42CF

#CF8942

#42CF42

Color Blindness Simulation

Original

#4288CF

Protanopia

#6061BE

Deuteranopia

#5C57BA

Tritanopia

#46B0AD

Achromatopsia

#7E7E7E

CSS Usage

background-color: #4288CF;
color: #4288CF;
border-color: #4288CF;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F3F7FB
100
#E4EDF6
200
#C6DBF1
300
#9DC2E6
400
#69A0D9
500
#347FCB
600
#2966A3
700
#215182
800
#1A3F66
900
#17304A
950
#0E1E2F

Contrast Checker

Text on white

3.71:1

AA Fail AAA Fail

Text on black

5.65:1

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