#A3100C

#A3100C

Color Values

HEX

#A3100C

RGB

163, 16, 12

HSL

1.6, 86.3%, 34.3%

HSV

1.6, 92.6%, 63.9%

CMYK

0.0%, 90.2%, 92.6%, 36.1%

OKLCH

0.4556 0.1781 28.9

Properties

Warm Dark Nearest: RAL 3013 Tomato Red

Color Harmonies

Complementary

#A3100C

#0C9FA3

Analogous

#A30C53

#A35B0C

#A3100C

Triadic

#A3100C

#0CA310

#100CA3

Split Complementary

#A3100C

#0CA35B

#0C53A3

Tetradic

#A3100C

#53A30C

#0C9FA3

#5B0CA3

Color Blindness Simulation

Original

#A3100C

Protanopia

#63620D

Deuteranopia

#6C770D

Tritanopia

#9C0E0E

Achromatopsia

#2F2F2F

CSS Usage

background-color: #A3100C;
color: #A3100C;
border-color: #A3100C;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FDF2F2
100
#FAE1E0
200
#FABEBC
300
#F7908D
400
#F2544F
500
#EE1711
600
#BE130E
700
#980F0B
800
#770C09
900
#560D0B
950
#360807

Contrast Checker

Text on white

7.96:1

AA Pass AAA Pass

Text on black

2.64:1

AA Fail 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