#A40D13

#A40D13

Color Values

HEX

#A40D13

RGB

164, 13, 19

HSL

357.6, 85.3%, 34.7%

HSV

357.6, 92.1%, 64.3%

CMYK

0.0%, 92.1%, 88.4%, 35.7%

OKLCH

0.4567 0.1796 27.2

Properties

Warm Dark Nearest: RAL 3001 Signal Red

Color Harmonies

Complementary

#A40D13

#0DA49E

Analogous

#A40D5F

#A4520D

#A40D13

Triadic

#A40D13

#13A40D

#0D13A4

Split Complementary

#A40D13

#0DA452

#0D5FA4

Tetradic

#A40D13

#5FA40D

#0DA49E

#520DA4

Color Blindness Simulation

Original

#A40D13

Protanopia

#636112

Deuteranopia

#6B7711

Tritanopia

#9C1010

Achromatopsia

#2E2E2E

CSS Usage

background-color: #A40D13;
color: #A40D13;
border-color: #A40D13;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FDF2F2
100
#FAE0E1
200
#FABDBF
300
#F68E92
400
#F15057
500
#EC131B
600
#BD0F16
700
#970C12
800
#76090E
900
#560B0E
950
#360709

Contrast Checker

Text on white

7.94:1

AA Pass AAA Pass

Text on black

2.65:1

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