#428FDD

#428FDD

Color Values

HEX

#428FDD

RGB

66, 143, 221

HSL

210.2, 69.5%, 56.3%

HSV

210.2, 70.1%, 86.7%

CMYK

70.1%, 35.3%, 0.0%, 13.3%

OKLCH

0.638 0.14 251.2

Properties

Cool Light Nearest: cornflowerblue

Color Harmonies

Complementary

#428FDD

#DD9042

Analogous

#42DCDD

#4342DD

#428FDD

Triadic

#428FDD

#DD428F

#8FDD42

Split Complementary

#428FDD

#DD4342

#DCDD42

Tetradic

#428FDD

#DD42DC

#DD9042

#42DD43

Color Blindness Simulation

Original

#428FDD

Protanopia

#6364CA

Deuteranopia

#5F59C6

Tritanopia

#46BBB8

Achromatopsia

#848484

CSS Usage

background-color: #428FDD;
color: #428FDD;
border-color: #428FDD;
Nearest Tailwind: Blue 400 #60A5FA

Tailwind Shades

50
#F3F7FC
100
#E3EDF8
200
#C2DBF4
300
#97C2EC
400
#5FA0E2
500
#277FD8
600
#1F66AD
700
#19518A
800
#133F6C
900
#12304F
950
#0B1E32

Contrast Checker

Text on white

3.38:1

AA Fail AAA Fail

Text on black

6.2:1

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