#B53531#B53531

#B53531 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.165 H 26.5°. Best body text is #FFFFFF at 5.97:1 contrast (WCAG AA passes).

Color values

HEX	#B53531
RGB	rgb(181, 53, 49)
HSL	hsl(2, 57%, 45%)
HSV	hsv(2, 73%, 71%)
CMYK	cmyk(0%, 70.7%, 72.9%, 29%)
CIE-LAB	lab(42.15, 51.09, 32.48)
CIE-LCH	lch(42.15, 60.54, 32.45°)
OKLab	oklab(52.09% 0.148 0.0737)
OKLCH	oklch(52.09% 0.165 26.5)
XYZ	xyz(20.8859, 12.5948, 4.2364)
Luminance	0.1259 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53531 #31B1B5

analogous

#B5316F #B53531 #B57731

triadic

#B53531 #31B535 #3531B5

tetradic

#B53531 #6FB531 #31B1B5 #7731B5

square

#B53531 #6FB531 #31B1B5 #7731B5

split-complementary

#B53531 #31B577 #316FB5

monochromatic

#551917 #852724 #B53531 #D05753 #DD8683

Accessibility & contrast

On white

5.97

#B53531 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.52

#B53531 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53531

5.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53531	#FFFFFF	#000000	##FFFFFF
##B53531	1.00	5.97	3.52	5.97
#FFFFFF	5.97	1.00	21.00	1.00
#000000	3.52	21.00	1.00	21.00
##FFFFFF	5.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A522F

Deuteranopia (green-blind)

#7A6E2D

Tritanopia (blue-blind)

#C70535

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b53531;
/* rgb */ color: rgb(181, 53, 49);
/* oklch */ color: oklch(52.1% 0.165 26.5);

Tailwind

colors: {
  custom: {
    50: '#d37569',
    500: '#b53531',
    950: '#000000',
  },
}

SCSS

$custom: #b53531;
$custom-light: #d37569;
$custom-dark: #000000;

JSON

{
  "hex": "#b53531",
  "rgb": {
    "r": 181,
    "g": 53,
    "b": 49
  },
  "hsl": {
    "h": 1.818,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52092,
    "c": 0.16531,
    "h": 26.5
  },
  "luminance": 0.12592
}

Semantic roles & 50–950 ramp

primary

#B53531

secondary

#7BC4C7

accent

#DCE147

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53531

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

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