#B13231#B13231

#B13231 is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.1% C 0.164 H 25.5°. Best body text is #FFFFFF at 6.23:1 contrast (WCAG AA passes).

Color values

HEX	#B13231
RGB	rgb(177, 50, 49)
HSL	hsl(0, 57%, 44%)
HSV	hsv(0, 72%, 69%)
CMYK	cmyk(0%, 71.8%, 72.3%, 30.6%)
CIE-LAB	lab(40.98, 50.93, 30.94)
CIE-LCH	lch(40.98, 59.60, 31.28°)
OKLab	oklab(51.09% 0.148 0.0706)
OKLCH	oklch(51.09% 0.164 25.5)
XYZ	xyz(19.8287, 11.8530, 4.1489)
Luminance	0.1185 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13231 #31B0B1

analogous

#B13170 #B13231 #B17231

triadic

#B13231 #31B132 #3231B1

tetradic

#B13231 #70B131 #31B0B1 #7231B1

square

#B13231 #70B131 #31B0B1 #7231B1

split-complementary

#B13231 #31B172 #3170B1

monochromatic

#511716 #812424 #B13231 #CF5151 #DC8180

Accessibility & contrast

On white

6.23

#B13231 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#B13231 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13231

6.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13231	#FFFFFF	#000000	##FFFFFF
##B13231	1.00	6.23	3.37	6.23
#FFFFFF	6.23	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574F30

Deuteranopia (green-blind)

#766B2D

Tritanopia (blue-blind)

#C30033

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b13231;
/* rgb */ color: rgb(177, 50, 49);
/* oklch */ color: oklch(51.1% 0.164 25.5);

Tailwind

colors: {
  custom: {
    50: '#d07369',
    500: '#b13231',
    950: '#000000',
  },
}

SCSS

$custom: #b13231;
$custom-light: #d07369;
$custom-dark: #000000;

JSON

{
  "hex": "#b13231",
  "rgb": {
    "r": 177,
    "g": 50,
    "b": 49
  },
  "hsl": {
    "h": 0.469,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51085,
    "c": 0.16394,
    "h": 25.5
  },
  "luminance": 0.1185
}

Semantic roles & 50–950 ramp

primary

#B13231

secondary

#79C4C5

accent

#DFE048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B13231

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

Preview Lab → · Contrast checker → · Palette generator →