#428FE3

#428FE3

Color Values

HEX

#428FE3

RGB

66, 143, 227

HSL

211.3, 74.2%, 57.5%

HSV

211.3, 70.9%, 89.0%

CMYK

70.9%, 37.0%, 0.0%, 11.0%

OKLCH

0.6414 0.1475 252.8

Properties

Cool Light Nearest: cornflowerblue

Color Harmonies

Complementary

#428FE3

#E39642

Analogous

#42E0E3

#4642E3

#428FE3

Triadic

#428FE3

#E3428F

#8FE342

Split Complementary

#428FE3

#E34642

#E0E342

Tetradic

#428FE3

#E342E0

#E39642

#42E346

Color Blindness Simulation

Original

#428FE3

Protanopia

#6364CF

Deuteranopia

#5F59CA

Tritanopia

#46BFBB

Achromatopsia

#858585

CSS Usage

background-color: #428FE3;
color: #428FE3;
border-color: #428FE3;
Nearest Tailwind: Blue 400 #60A5FA

Tailwind Shades

50
#F3F7FC
100
#E2EDF8
200
#C1DAF6
300
#94C0EF
400
#5B9EE7
500
#217BDE
600
#1A63B2
700
#154F8E
800
#103E6F
900
#102F51
950
#0A1E33

Contrast Checker

Text on white

3.35:1

AA Fail AAA Fail

Text on black

6.27:1

AA Pass AAA Fail

Related Articles

Tutorials

CSS color-mix(): Blend Colors Natively in the Browser

Jan 26, 2026
Tutorials

Building a Color Picker Web Component from Scratch

Jan 21, 2026
Tutorials

Perceptual Color Spaces: Lab, LCH, Oklab, OKLCH

Jan 15, 2026