#F21515

#F21515

Color Values

HEX

#F21515

RGB

242, 21, 21

HSL

0.0, 89.5%, 51.6%

HSV

0.0, 91.3%, 94.9%

CMYK

0.0%, 91.3%, 91.3%, 5.1%

OKLCH

0.6088 0.2423 28.6

Properties

Warm Light Nearest: red 2

Color Harmonies

Complementary

#F21515

#15F2F2

Analogous

#F21584

#F28415

#F21515

Triadic

#F21515

#15F215

#1515F2

Split Complementary

#F21515

#15F284

#1584F2

Tetradic

#F21515

#84F215

#15F2F2

#8415F2

Color Blindness Simulation

Original

#F21515

Protanopia

#929015

Deuteranopia

#9FB015

Tritanopia

#E71515

Achromatopsia

#444444

CSS Usage

background-color: #F21515;
color: #F21515;
border-color: #F21515;
Nearest Tailwind: Red 600 #DC2626

Tailwind Shades

50
#FDF2F2
100
#FBE0E0
200
#FBBBBB
300
#F98B8B
400
#F54C4C
500
#F20D0D
600
#C10B0B
700
#9B0909
800
#790707
900
#570909
950
#370606

Contrast Checker

Text on white

4.29:1

AA Fail AAA Fail

Text on black

4.89:1

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