#428ED9

#428ED9

Color Values

HEX

#428ED9

RGB

66, 142, 217

HSL

209.8, 66.5%, 55.5%

HSV

209.8, 69.6%, 85.1%

CMYK

69.6%, 34.6%, 0.0%, 14.9%

OKLCH

0.6335 0.136 250.6

Properties

Cool Light Nearest: cornflowerblue

Color Harmonies

Complementary

#428ED9

#D98D42

Analogous

#42D9D8

#4243D9

#428ED9

Triadic

#428ED9

#D9428E

#8ED942

Split Complementary

#428ED9

#D94243

#D9D842

Tetradic

#428ED9

#D842D9

#D98D42

#43D942

Color Blindness Simulation

Original

#428ED9

Protanopia

#6364C7

Deuteranopia

#5E59C2

Tritanopia

#46B9B5

Achromatopsia

#838383

CSS Usage

background-color: #428ED9;
color: #428ED9;
border-color: #428ED9;
Nearest Tailwind: Sky 600 #0284C7

Tailwind Shades

50
#F3F7FC
100
#E3EDF7
200
#C4DBF3
300
#99C2EA
400
#62A1DF
500
#2B80D4
600
#2266AA
700
#1B5288
800
#15406A
900
#13314D
950
#0C1F31

Contrast Checker

Text on white

3.44:1

AA Fail AAA Fail

Text on black

6.1:1

AA Pass AAA Fail

Related Articles

Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026
Tutorials

How to Choose Brand Colors: A Step-by-Step Guide

Jan 18, 2026