#B53331#B53331

#B53331 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.9% C 0.167 H 25.9°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B53331
RGB	rgb(181, 51, 49)
HSL	hsl(1, 57%, 45%)
HSV	hsv(1, 73%, 71%)
CMYK	cmyk(0%, 71.8%, 72.9%, 29%)
CIE-LAB	lab(41.87, 51.85, 32.16)
CIE-LCH	lch(41.87, 61.02, 31.81°)
OKLab	oklab(51.89% 0.1504 0.073)
OKLCH	oklch(51.89% 0.167 25.9)
XYZ	xyz(20.7966, 12.4163, 4.2067)
Luminance	0.1241 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53331 #31B3B5

analogous

#B53171 #B53331 #B57531

triadic

#B53331 #31B533 #3331B5

tetradic

#B53331 #71B531 #31B3B5 #7531B5

square

#B53331 #71B531 #31B3B5 #7531B5

split-complementary

#B53331 #31B575 #3171B5

monochromatic

#551817 #852524 #B53331 #D05553 #DD8483

Accessibility & contrast

On white

6.03

#B53331 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B53331 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53331

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53331	#FFFFFF	#000000	##FFFFFF
##B53331	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)

#59512F

Deuteranopia (green-blind)

#796D2D

Tritanopia (blue-blind)

#C70034

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b53331;
/* rgb */ color: rgb(181, 51, 49);
/* oklch */ color: oklch(51.9% 0.167 25.9);

Tailwind

colors: {
  custom: {
    50: '#d37469',
    500: '#b53331',
    950: '#000000',
  },
}

SCSS

$custom: #b53331;
$custom-light: #d37469;
$custom-dark: #000000;

JSON

{
  "hex": "#b53331",
  "rgb": {
    "r": 181,
    "g": 51,
    "b": 49
  },
  "hsl": {
    "h": 0.909,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51886,
    "c": 0.16716,
    "h": 25.9
  },
  "luminance": 0.12413
}

Semantic roles & 50–950 ramp

primary

#B53331

secondary

#7BC6C7

accent

#DEE147

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53331

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

Preview Lab → · Contrast checker → · Palette generator →