#B53D37#B53D37

#B53D37 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.1% C 0.157 H 26.7°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#B53D37
RGB	rgb(181, 61, 55)
HSL	hsl(3, 53%, 46%)
HSV	hsv(3, 70%, 71%)
CMYK	cmyk(0%, 66.3%, 69.6%, 29%)
CIE-LAB	lab(43.42, 48.14, 30.45)
CIE-LCH	lch(43.42, 56.96, 32.31°)
OKLab	oklab(53.07% 0.1399 0.0704)
OKLCH	oklch(53.07% 0.157 26.7)
XYZ	xyz(21.4166, 13.4401, 5.0802)
Luminance	0.1344 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53D37 #37AFB5

analogous

#B53770 #B53D37 #B57C37

triadic

#B53D37 #37B53D #3D37B5

tetradic

#B53D37 #70B537 #37AFB5 #7C37B5

square

#B53D37 #70B537 #37AFB5 #7C37B5

split-complementary

#B53D37 #37B57C #3770B5

monochromatic

#571D1A #862D29 #B53D37 #CD615C #DC8F8B

Accessibility & contrast

On white

5.70

#B53D37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B53D37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53D37

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53D37	#FFFFFF	#000000	##FFFFFF
##B53D37	1.00	5.70	3.69	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5635

Deuteranopia (green-blind)

#7C7033

Tritanopia (blue-blind)

#C71E3D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b53d37;
/* rgb */ color: rgb(181, 61, 55);
/* oklch */ color: oklch(53.1% 0.157 26.7);

Tailwind

colors: {
  custom: {
    50: '#d3796e',
    500: '#b53d37',
    950: '#000000',
  },
}

SCSS

$custom: #b53d37;
$custom-light: #d3796e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53d37",
  "rgb": {
    "r": 181,
    "g": 61,
    "b": 55
  },
  "hsl": {
    "h": 2.857,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.53071,
    "c": 0.15663,
    "h": 26.7
  },
  "luminance": 0.13437
}

Semantic roles & 50–950 ramp

primary

#B53D37

secondary

#82C3C6

accent

#D6DD4B

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B53D37

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

Preview Lab → · Contrast checker → · Palette generator →