#B13831#B13831

#B13831 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.7% C 0.158 H 27.4°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#B13831
RGB	rgb(177, 56, 49)
HSL	hsl(3, 57%, 44%)
HSV	hsv(3, 72%, 69%)
CMYK	cmyk(0%, 68.4%, 72.3%, 30.6%)
CIE-LAB	lab(41.85, 48.57, 31.94)
CIE-LCH	lch(41.85, 58.13, 33.33°)
OKLab	oklab(51.73% 0.1405 0.0728)
OKLCH	oklch(51.73% 0.158 27.4)
XYZ	xyz(20.1022, 12.4001, 4.2401)
Luminance	0.1240 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13831 #31AAB1

analogous

#B1316A #B13831 #B17831

triadic

#B13831 #31B138 #3831B1

tetradic

#B13831 #6AB131 #31AAB1 #7831B1

square

#B13831 #6AB131 #31AAB1 #7831B1

split-complementary

#B13831 #31B178 #316AB1

monochromatic

#511A16 #812924 #B13831 #CF5751 #DC8580

Accessibility & contrast

On white

6.04

#B13831 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B13831 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13831

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13831	#FFFFFF	#000000	##FFFFFF
##B13831	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)

#5A522F

Deuteranopia (green-blind)

#786C2D

Tritanopia (blue-blind)

#C31437

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b13831;
/* rgb */ color: rgb(177, 56, 49);
/* oklch */ color: oklch(51.7% 0.158 27.4);

Tailwind

colors: {
  custom: {
    50: '#d07669',
    500: '#b13831',
    950: '#000000',
  },
}

SCSS

$custom: #b13831;
$custom-light: #d07669;
$custom-dark: #000000;

JSON

{
  "hex": "#b13831",
  "rgb": {
    "r": 177,
    "g": 56,
    "b": 49
  },
  "hsl": {
    "h": 3.281,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51731,
    "c": 0.15823,
    "h": 27.4
  },
  "luminance": 0.12397
}

Semantic roles & 50–950 ramp

primary

#B13831

secondary

#79C1C5

accent

#D8E048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B13831

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

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