#B53138#B53138

#B53138 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.8% C 0.168 H 22.6°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#B53138
RGB	rgb(181, 49, 56)
HSL	hsl(357, 57%, 45%)
HSV	hsv(357, 73%, 71%)
CMYK	cmyk(0%, 72.9%, 69.1%, 29%)
CIE-LAB	lab(41.70, 52.93, 27.78)
CIE-LCH	lch(41.70, 59.78, 27.70°)
OKLab	oklab(51.79% 0.1553 0.0647)
OKLCH	oklch(51.79% 0.168 22.6)
XYZ	xyz(20.8705, 12.3090, 5.0175)
Luminance	0.1231 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53138 #31B5AE

analogous

#B5317A #B53138 #B56C31

triadic

#B53138 #38B531 #3138B5

tetradic

#B53138 #7AB531 #31B5AE #6C31B5

square

#B53138 #7AB531 #31B5AE #6C31B5

split-complementary

#B53138 #31B56C #317AB5

monochromatic

#55171A #852429 #B53138 #D05359 #DD8388

Accessibility & contrast

On white

6.07

#B53138 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B53138 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53138

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53138	#FFFFFF	#000000	##FFFFFF
##B53138	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575037

Deuteranopia (green-blind)

#786D34

Tritanopia (blue-blind)

#C70035

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b53138;
/* rgb */ color: rgb(181, 49, 56);
/* oklch */ color: oklch(51.8% 0.168 22.6);

Tailwind

colors: {
  custom: {
    50: '#d3736e',
    500: '#b53138',
    950: '#000000',
  },
}

SCSS

$custom: #b53138;
$custom-light: #d3736e;
$custom-dark: #000000;

JSON

{
  "hex": "#b53138",
  "rgb": {
    "r": 181,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 356.818,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.51793,
    "c": 0.16821,
    "h": 22.6
  },
  "luminance": 0.12306
}

Semantic roles & 50–950 ramp

primary

#B53138

secondary

#7BC7C3

accent

#E1D847

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53138

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

Preview Lab → · Contrast checker → · Palette generator →