#0421FF

#0421FF

Color Values

HEX

#0421FF

RGB

4, 33, 255

HSL

233.1, 100.0%, 50.8%

HSV

233.1, 98.4%, 100.0%

CMYK

98.4%, 87.1%, 0.0%, 0.0%

OKLCH

0.4682 0.3022 264.4

Properties

Cool Dark Nearest: blue

Color Harmonies

Complementary

#0421FF

#FFE204

Analogous

#049EFF

#6504FF

#0421FF

Triadic

#0421FF

#FF0421

#21FF04

Split Complementary

#0421FF

#FF6504

#9EFF04

Tetradic

#0421FF

#FF049E

#FFE204

#04FF65

Color Blindness Simulation

Original

#0421FF

Protanopia

#1111C9

Deuteranopia

#0F0DBC

Tritanopia

#059F96

Achromatopsia

#2B2B2B

CSS Usage

background-color: #0421FF;
color: #0421FF;
border-color: #0421FF;
Nearest Tailwind: Violet 600 #7C3AED

Tailwind Shades

50
#F1F2FE
100
#DEE1FC
200
#B8C0FF
300
#8593FF
400
#4258FF
500
#001DFF
600
#0017CC
700
#0013A3
800
#000F80
900
#050F5C
950
#03093A

Contrast Checker

Text on white

7.87:1

AA Pass AAA Pass

Text on black

2.67:1

AA Fail 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