#B3371C#B3371C

#B3371C is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.7% C 0.165 H 33.7°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B3371C
RGB	rgb(179, 55, 28)
HSL	hsl(11, 73%, 41%)
HSV	hsv(11, 84%, 70%)
CMYK	cmyk(0%, 69.3%, 84.4%, 29.8%)
CIE-LAB	lab(41.85, 48.88, 43.43)
CIE-LCH	lch(41.85, 65.38, 41.62°)
OKLab	oklab(51.73% 0.1372 0.0916)
OKLCH	oklch(51.73% 0.165 33.7)
XYZ	xyz(20.1686, 12.4030, 2.4304)
Luminance	0.1240 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3371C #1C98B3

analogous

#B31C4D #B3371C #B3821C

triadic

#B3371C #1CB337 #371CB3

tetradic

#B3371C #4DB31C #1C98B3 #821CB3

square

#B3371C #4DB31C #1C98B3 #821CB3

split-complementary

#B3371C #1CB382 #1C4DB3

monochromatic

#49160B #7E2714 #B3371C #DE4D2E #E77A63

Accessibility & contrast

On white

6.03

#B3371C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B3371C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3371C

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3371C	#FFFFFF	#000000	##FFFFFF
##B3371C	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5117

Deuteranopia (green-blind)

#7A6D15

Tritanopia (blue-blind)

#C50632

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b3371c;
/* rgb */ color: rgb(179, 55, 28);
/* oklch */ color: oklch(51.7% 0.165 33.7);

Tailwind

colors: {
  custom: {
    50: '#d3755b',
    500: '#b3371c',
    950: '#000000',
  },
}

SCSS

$custom: #b3371c;
$custom-light: #d3755b;
$custom-dark: #000000;

JSON

{
  "hex": "#b3371c",
  "rgb": {
    "r": 179,
    "g": 55,
    "b": 28
  },
  "hsl": {
    "h": 10.728,
    "s": 72.947,
    "l": 40.588
  },
  "oklch": {
    "l": 0.51734,
    "c": 0.16492,
    "h": 33.7
  },
  "luminance": 0.124
}

Semantic roles & 50–950 ramp

primary

#B3371C

secondary

#5FB8CB

accent

#CFF038

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B3371C

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →