#B53139#B53139

#B53139 is a mid, vivid red. Relative luminance 0.123; OKLCH L 51.8% C 0.168 H 22.2°. Best body text is #FFFFFF at 6.06:1 contrast (WCAG AA passes).

Color values

HEX	#B53139
RGB	rgb(181, 49, 57)
HSL	hsl(356, 57%, 45%)
HSV	hsv(356, 73%, 71%)
CMYK	cmyk(0%, 72.9%, 68.5%, 29%)
CIE-LAB	lab(41.72, 52.98, 27.20)
CIE-LCH	lch(41.72, 59.55, 27.17°)
OKLab	oklab(51.81% 0.1557 0.0635)
OKLCH	oklch(51.81% 0.168 22.2)
XYZ	xyz(20.8952, 12.3189, 5.1476)
Luminance	0.1232 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53139 #31B5AD

analogous

#B5317B #B53139 #B56B31

triadic

#B53139 #39B531 #3139B5

tetradic

#B53139 #7BB531 #31B5AD #6B31B5

square

#B53139 #7BB531 #31B5AD #6B31B5

split-complementary

#B53139 #31B56B #317BB5

monochromatic

#55171B #85242A #B53139 #D0535A #DD8388

Accessibility & contrast

On white

6.06

#B53139 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#B53139 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53139

6.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53139	#FFFFFF	#000000	##FFFFFF
##B53139	1.00	6.06	3.46	6.06
#FFFFFF	6.06	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575038

Deuteranopia (green-blind)

#786D35

Tritanopia (blue-blind)

#C70035

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #b53139;
/* rgb */ color: rgb(181, 49, 57);
/* oklch */ color: oklch(51.8% 0.168 22.2);

Tailwind

colors: {
  custom: {
    50: '#d3736f',
    500: '#b53139',
    950: '#000000',
  },
}

SCSS

$custom: #b53139;
$custom-light: #d3736f;
$custom-dark: #000000;

JSON

{
  "hex": "#b53139",
  "rgb": {
    "r": 181,
    "g": 49,
    "b": 57
  },
  "hsl": {
    "h": 356.364,
    "s": 57.391,
    "l": 45.098
  },
  "oklch": {
    "l": 0.5181,
    "c": 0.16813,
    "h": 22.2
  },
  "luminance": 0.12316
}

Semantic roles & 50–950 ramp

primary

#B53139

secondary

#7BC7C2

accent

#E1D747

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B53139

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

Preview Lab → · Contrast checker → · Palette generator →