#B3371A#B3371A

#B3371A is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.7% C 0.165 H 34.2°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#B3371A
RGB	rgb(179, 55, 26)
HSL	hsl(11, 75%, 40%)
HSV	hsv(11, 85%, 70%)
CMYK	cmyk(0%, 69.3%, 85.5%, 29.8%)
CIE-LAB	lab(41.84, 48.82, 44.36)
CIE-LCH	lch(41.84, 65.97, 42.26°)
OKLab	oklab(51.72% 0.1367 0.0929)
OKLCH	oklch(51.72% 0.165 34.2)
XYZ	xyz(20.1454, 12.3937, 2.3086)
Luminance	0.1239 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3371A #1A96B3

analogous

#B31A49 #B3371A #B3841A

triadic

#B3371A #1AB337 #371AB3

tetradic

#B3371A #49B31A #1A96B3 #841AB3

square

#B3371A #49B31A #1A96B3 #841AB3

split-complementary

#B3371A #1AB384 #1A49B3

monochromatic

#48160A #7E2712 #B3371A #E04D2A #E87960

Accessibility & contrast

On white

6.04

#B3371A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B3371A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3371A

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3371A	#FFFFFF	#000000	##FFFFFF
##B3371A	1.00	6.04	3.48	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5115

Deuteranopia (green-blind)

#7A6D13

Tritanopia (blue-blind)

#C50632

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b3371a;
/* rgb */ color: rgb(179, 55, 26);
/* oklch */ color: oklch(51.7% 0.165 34.2);

Tailwind

colors: {
  custom: {
    50: '#d3755a',
    500: '#b3371a',
    950: '#000000',
  },
}

SCSS

$custom: #b3371a;
$custom-light: #d3755a;
$custom-dark: #000000;

JSON

{
  "hex": "#b3371a",
  "rgb": {
    "r": 179,
    "g": 55,
    "b": 26
  },
  "hsl": {
    "h": 11.373,
    "s": 74.634,
    "l": 40.196
  },
  "oklch": {
    "l": 0.51719,
    "c": 0.16525,
    "h": 34.2
  },
  "luminance": 0.12391
}

Semantic roles & 50–950 ramp

primary

#B3371A

secondary

#5DB7CC

accent

#CEF137

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B3371A

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

Preview Lab → · Contrast checker → · Palette generator →