#B51010

#B51010

Color Values

HEX

#B51010

RGB

181, 16, 16

HSL

0.0, 83.8%, 38.6%

HSV

0.0, 91.2%, 71.0%

CMYK

0.0%, 91.2%, 91.2%, 29.0%

OKLCH

0.4911 0.1935 28.4

Properties

Warm Dark Nearest: RAL 2002 Vermilion

Color Harmonies

Complementary

#B51010

#10B5B5

Analogous

#B51062

#B56210

#B51010

Triadic

#B51010

#10B510

#1010B5

Split Complementary

#B51010

#10B562

#1062B5

Tetradic

#B51010

#62B510

#10B5B5

#6210B5

Color Blindness Simulation

Original

#B51010

Protanopia

#6E6C10

Deuteranopia

#778410

Tritanopia

#AD1010

Achromatopsia

#333333

CSS Usage

background-color: #B51010;
color: #B51010;
border-color: #B51010;
Nearest Tailwind: Red 700 #B91C1C

Tailwind Shades

50
#FDF2F2
100
#FAE0E0
200
#F9BDBD
300
#F58F8F
400
#F05252
500
#EA1515
600
#BB1111
700
#960D0D
800
#750A0A
900
#550C0C
950
#360808

Contrast Checker

Text on white

6.89:1

AA Pass AAA Fail

Text on black

3.05:1

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