#B53B2F#B53B2F

#B53B2F is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.7% C 0.160 H 29.1°. Best body text is #FFFFFF at 5.78:1 contrast (WCAG AA passes).

Color values

HEX	#B53B2F
RGB	rgb(181, 59, 47)
HSL	hsl(5, 59%, 45%)
HSV	hsv(5, 74%, 71%)
CMYK	cmyk(0%, 67.4%, 74%, 29%)
CIE-LAB	lab(43.00, 48.59, 34.61)
CIE-LCH	lch(43.00, 59.66, 35.46°)
OKLab	oklab(52.73% 0.1397 0.0779)
OKLCH	oklch(52.73% 0.16 29.1)
XYZ	xyz(21.1354, 13.1600, 4.1160)
Luminance	0.1316 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53B2F #2FA9B5

analogous

#B52F66 #B53B2F #B57E2F

triadic

#B53B2F #2FB53B #3B2FB5

tetradic

#B53B2F #66B52F #2FA9B5 #7E2FB5

square

#B53B2F #66B52F #2FA9B5 #7E2FB5

split-complementary

#B53B2F #2FB57E #2F66B5

monochromatic

#541B16 #842B22 #B53B2F #D15B50 #DE8980

Accessibility & contrast

On white

5.78

#B53B2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B53B2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53B2F

5.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53B2F	#FFFFFF	#000000	##FFFFFF
##B53B2F	1.00	5.78	3.63	5.78
#FFFFFF	5.78	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D552D

Deuteranopia (green-blind)

#7C6F2B

Tritanopia (blue-blind)

#C71739

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b53b2f;
/* rgb */ color: rgb(181, 59, 47);
/* oklch */ color: oklch(52.7% 0.160 29.1);

Tailwind

colors: {
  custom: {
    50: '#d37868',
    500: '#b53b2f',
    950: '#000000',
  },
}

SCSS

$custom: #b53b2f;
$custom-light: #d37868;
$custom-dark: #000000;

JSON

{
  "hex": "#b53b2f",
  "rgb": {
    "r": 181,
    "g": 59,
    "b": 47
  },
  "hsl": {
    "h": 5.373,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.52726,
    "c": 0.15996,
    "h": 29.1
  },
  "luminance": 0.13157
}

Semantic roles & 50–950 ramp

primary

#B53B2F

secondary

#79C0C7

accent

#D4E246

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53B2F

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

Preview Lab → · Contrast checker → · Palette generator →