#A40103

#A40103

Color Values

HEX

#A40103

RGB

164, 1, 3

HSL

359.3, 98.8%, 32.4%

HSV

359.3, 99.4%, 64.3%

CMYK

0.0%, 99.4%, 98.2%, 35.7%

OKLCH

0.4518 0.1847 28.9

Properties

Warm Dark Nearest: RAL 3013 Tomato Red

Color Harmonies

Complementary

#A40103

#01A4A2

Analogous

#A40155

#A45101

#A40103

Triadic

#A40103

#03A401

#0103A4

Split Complementary

#A40103

#01A451

#0155A4

Tetradic

#A40103

#55A401

#01A4A2

#5101A4

Color Blindness Simulation

Original

#A40103

Protanopia

#5D5C03

Deuteranopia

#677302

Tritanopia

#9C0202

Achromatopsia

#242424

CSS Usage

background-color: #A40103;
color: #A40103;
border-color: #A40103;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FEF1F1
100
#FCDEDF
200
#FFB8B9
300
#FE8587
400
#FE4346
500
#FD0204
600
#CB0104
700
#A20103
800
#7F0102
900
#5C0506
950
#3A0304

Contrast Checker

Text on white

8.13:1

AA Pass AAA Pass

Text on black

2.58:1

AA Fail AAA Fail

Related Articles

Brand Stories

Pantone Colors by Decade: The 2000s, 2010s, and 2020s Compared

Feb 01, 2026
Tutorials

Responsive Color: Adapting Colors for Different Screens

Jan 23, 2026
Tutorials

Color for Data Storytelling: Beyond Default Chart Colors

Jan 21, 2026