#B53A2B#B53A2B

#B53A2B is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.6% C 0.162 H 30.2°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#B53A2B
RGB	rgb(181, 58, 43)
HSL	hsl(7, 62%, 44%)
HSV	hsv(7, 76%, 71%)
CMYK	cmyk(0%, 68%, 76.2%, 29%)
CIE-LAB	lab(42.80, 48.84, 36.65)
CIE-LCH	lch(42.80, 61.06, 36.88°)
OKLab	oklab(52.56% 0.1397 0.0814)
OKLCH	oklch(52.56% 0.162 30.2)
XYZ	xyz(21.0075, 13.0274, 3.6934)
Luminance	0.1302 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53A2B #2BA6B5

analogous

#B52B61 #B53A2B #B57F2B

triadic

#B53A2B #2BB53A #3A2BB5

tetradic

#B53A2B #61B52B #2BA6B5 #7F2BB5

square

#B53A2B #61B52B #2BA6B5 #7F2BB5

split-complementary

#B53A2B #2BB57F #2B61B5

monochromatic

#521A14 #842A1F #B53A2B #D45849 #E0867B

Accessibility & contrast

On white

5.83

#B53A2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#B53A2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53A2B

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53A2B	#FFFFFF	#000000	##FFFFFF
##B53A2B	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5428

Deuteranopia (green-blind)

#7C6F26

Tritanopia (blue-blind)

#C71337

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b53a2b;
/* rgb */ color: rgb(181, 58, 43);
/* oklch */ color: oklch(52.6% 0.162 30.2);

Tailwind

colors: {
  custom: {
    50: '#d37765',
    500: '#b53a2b',
    950: '#000000',
  },
}

SCSS

$custom: #b53a2b;
$custom-light: #d37765;
$custom-dark: #000000;

JSON

{
  "hex": "#b53a2b",
  "rgb": {
    "r": 181,
    "g": 58,
    "b": 43
  },
  "hsl": {
    "h": 6.522,
    "s": 61.607,
    "l": 43.922
  },
  "oklch": {
    "l": 0.52562,
    "c": 0.16162,
    "h": 30.2
  },
  "luminance": 0.13024
}

Semantic roles & 50–950 ramp

primary

#B53A2B

secondary

#74BFC8

accent

#D3E543

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53A2B

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

Preview Lab → · Contrast checker → · Palette generator →