#B53F31#B53F31

#B53F31 is a mid, vivid red. Relative luminance 0.136; OKLCH L 53.2% C 0.156 H 29.8°. Best body text is #FFFFFF at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#B53F31
RGB	rgb(181, 63, 49)
HSL	hsl(6, 57%, 45%)
HSV	hsv(6, 73%, 71%)
CMYK	cmyk(0%, 65.2%, 72.9%, 29%)
CIE-LAB	lab(43.66, 46.98, 34.20)
CIE-LCH	lch(43.66, 58.11, 36.06°)
OKLab	oklab(53.23% 0.1351 0.0775)
OKLCH	oklch(53.23% 0.156 29.8)
XYZ	xyz(21.3902, 13.6036, 4.4045)
Luminance	0.1360 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53F31 #31A7B5

analogous

#B53165 #B53F31 #B58131

triadic

#B53F31 #31B53F #3F31B5

tetradic

#B53F31 #65B531 #31A7B5 #8131B5

square

#B53F31 #65B531 #31A7B5 #8131B5

split-complementary

#B53F31 #31B581 #3165B5

monochromatic

#551D17 #852E24 #B53F31 #D06053 #DD8D83

Accessibility & contrast

On white

5.64

#B53F31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#B53F31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53F31

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53F31	#FFFFFF	#000000	##FFFFFF
##B53F31	1.00	5.64	3.72	5.64
#FFFFFF	5.64	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60572F

Deuteranopia (green-blind)

#7D712D

Tritanopia (blue-blind)

#C7203C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b53f31;
/* rgb */ color: rgb(181, 63, 49);
/* oklch */ color: oklch(53.2% 0.156 29.8);

Tailwind

colors: {
  custom: {
    50: '#d37a6a',
    500: '#b53f31',
    950: '#000000',
  },
}

SCSS

$custom: #b53f31;
$custom-light: #d37a6a;
$custom-dark: #000000;

JSON

{
  "hex": "#b53f31",
  "rgb": {
    "r": 181,
    "g": 63,
    "b": 49
  },
  "hsl": {
    "h": 6.364,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.53226,
    "c": 0.1557,
    "h": 29.8
  },
  "luminance": 0.13601
}

Semantic roles & 50–950 ramp

primary

#B53F31

secondary

#7BBFC7

accent

#D0E147

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A06

muted

#847C7A

Preview Lab

Preview with #B53F31

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

Preview Lab → · Contrast checker → · Palette generator →