#B53231#B53231

#B53231 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.8% C 0.168 H 25.6°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#B53231
RGB	rgb(181, 50, 49)
HSL	hsl(0, 57%, 45%)
HSV	hsv(0, 73%, 71%)
CMYK	cmyk(0%, 72.4%, 72.9%, 29%)
CIE-LAB	lab(41.74, 52.22, 32.01)
CIE-LCH	lch(41.74, 61.25, 31.51°)
OKLab	oklab(51.79% 0.1515 0.0727)
OKLCH	oklch(51.79% 0.168 25.6)
XYZ	xyz(20.7534, 12.3299, 4.1923)
Luminance	0.1233 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53231 #31B4B5

analogous

#B53172 #B53231 #B57431

triadic

#B53231 #31B532 #3231B5

tetradic

#B53231 #72B531 #31B4B5 #7431B5

square

#B53231 #72B531 #31B4B5 #7431B5

split-complementary

#B53231 #31B574 #3172B5

monochromatic

#551717 #852524 #B53231 #D05453 #DD8483

Accessibility & contrast

On white

6.06

#B53231 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.47

#B53231 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53231

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53231	#FFFFFF	#000000	##FFFFFF
##B53231	1.00	6.06	3.47	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.47	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#58502F

Deuteranopia (green-blind)

#796D2C

Tritanopia (blue-blind)

#C70033

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b53231;
/* rgb */ color: rgb(181, 50, 49);
/* oklch */ color: oklch(51.8% 0.168 25.6);

Tailwind

colors: {
  custom: {
    50: '#d37369',
    500: '#b53231',
    950: '#000000',
  },
}

SCSS

$custom: #b53231;
$custom-light: #d37369;
$custom-dark: #000000;

JSON

{
  "hex": "#b53231",
  "rgb": {
    "r": 181,
    "g": 50,
    "b": 49
  },
  "hsl": {
    "h": 0.455,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51786,
    "c": 0.16807,
    "h": 25.6
  },
  "luminance": 0.12327
}

Semantic roles & 50–950 ramp

primary

#B53231

secondary

#7BC6C7

accent

#DFE147

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53231

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

Preview Lab → · Contrast checker → · Palette generator →