#B53A31#B53A31

#B53A31 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.6% C 0.161 H 28.1°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#B53A31
RGB	rgb(181, 58, 49)
HSL	hsl(4, 57%, 45%)
HSV	hsv(4, 73%, 71%)
CMYK	cmyk(0%, 68%, 72.9%, 29%)
CIE-LAB	lab(42.88, 49.10, 33.31)
CIE-LCH	lch(42.88, 59.34, 34.16°)
OKLab	oklab(52.64% 0.1417 0.0755)
OKLCH	oklch(52.64% 0.161 28.1)
XYZ	xyz(21.1258, 13.0747, 4.3164)
Luminance	0.1307 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53A31 #31ACB5

analogous

#B5316A #B53A31 #B57C31

triadic

#B53A31 #31B53A #3A31B5

tetradic

#B53A31 #6AB531 #31ACB5 #7C31B5

square

#B53A31 #6AB531 #31ACB5 #7C31B5

split-complementary

#B53A31 #31B57C #316AB5

monochromatic

#551B17 #852B24 #B53A31 #D05B53 #DD8983

Accessibility & contrast

On white

5.81

#B53A31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#B53A31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53A31

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53A31	#FFFFFF	#000000	##FFFFFF
##B53A31	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D542F

Deuteranopia (green-blind)

#7B6F2D

Tritanopia (blue-blind)

#C71539

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b53a31;
/* rgb */ color: rgb(181, 58, 49);
/* oklch */ color: oklch(52.6% 0.161 28.1);

Tailwind

colors: {
  custom: {
    50: '#d37769',
    500: '#b53a31',
    950: '#000000',
  },
}

SCSS

$custom: #b53a31;
$custom-light: #d37769;
$custom-dark: #000000;

JSON

{
  "hex": "#b53a31",
  "rgb": {
    "r": 181,
    "g": 58,
    "b": 49
  },
  "hsl": {
    "h": 4.091,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52638,
    "c": 0.16057,
    "h": 28.1
  },
  "luminance": 0.13072
}

Semantic roles & 50–950 ramp

primary

#B53A31

secondary

#7BC2C7

accent

#D6E147

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53A31

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

Preview Lab → · Contrast checker → · Palette generator →