#B73539#B73539

#B73539 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.6% C 0.166 H 23.4°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B73539
RGB	rgb(183, 53, 57)
HSL	hsl(358, 55%, 46%)
HSV	hsv(358, 71%, 72%)
CMYK	cmyk(0%, 71%, 68.9%, 28.2%)
CIE-LAB	lab(42.63, 52.13, 28.39)
CIE-LCH	lch(42.63, 59.37, 28.57°)
OKLab	oklab(52.56% 0.1527 0.0661)
OKLCH	oklch(52.56% 0.166 23.4)
XYZ	xyz(21.5424, 12.9121, 5.2280)
Luminance	0.1291 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73539 #35B7B3

analogous

#B7357A #B73539 #B77235

triadic

#B73539 #39B735 #3539B7

tetradic

#B73539 #7AB735 #35B7B3 #7235B7

square

#B73539 #7AB735 #35B7B3 #7235B7

split-complementary

#B73539 #35B772 #357AB7

monochromatic

#581A1B #88272A #B73539 #CF5A5E #DD898C

Accessibility & contrast

On white

5.86

#B73539 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B73539 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73539

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73539	#FFFFFF	#000000	##FFFFFF
##B73539	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5338

Deuteranopia (green-blind)

#7A6F35

Tritanopia (blue-blind)

#C90738

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b73539;
/* rgb */ color: rgb(183, 53, 57);
/* oklch */ color: oklch(52.6% 0.166 23.4);

Tailwind

colors: {
  custom: {
    50: '#d4756f',
    500: '#b73539',
    950: '#000000',
  },
}

SCSS

$custom: #b73539;
$custom-light: #d4756f;
$custom-dark: #000000;

JSON

{
  "hex": "#b73539",
  "rgb": {
    "r": 183,
    "g": 53,
    "b": 57
  },
  "hsl": {
    "h": 358.154,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52558,
    "c": 0.1664,
    "h": 23.4
  },
  "luminance": 0.12909
}

Semantic roles & 50–950 ramp

primary

#B73539

secondary

#81C7C5

accent

#DEDA49

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73539

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

Preview Lab → · Contrast checker → · Palette generator →