#B73538#B73538

#B73538 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.5% C 0.167 H 23.8°. Best body text is #FFFFFF at 5.87:1 contrast (WCAG AA passes).

Color values

HEX	#B73538
RGB	rgb(183, 53, 56)
HSL	hsl(359, 55%, 46%)
HSV	hsv(359, 71%, 72%)
CMYK	cmyk(0%, 71%, 69.4%, 28.2%)
CIE-LAB	lab(42.62, 52.08, 28.98)
CIE-LCH	lch(42.62, 59.60, 29.09°)
OKLab	oklab(52.54% 0.1523 0.0672)
OKLCH	oklch(52.54% 0.167 23.8)
XYZ	xyz(21.5177, 12.9022, 5.0980)
Luminance	0.1290 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73538 #35B7B4

analogous

#B73579 #B73538 #B77335

triadic

#B73538 #38B735 #3538B7

tetradic

#B73538 #79B735 #35B7B4 #7335B7

square

#B73538 #79B735 #35B7B4 #7335B7

split-complementary

#B73538 #35B773 #3579B7

monochromatic

#581A1B #882729 #B73538 #CF5A5D #DD898B

Accessibility & contrast

On white

5.87

#B73538 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B73538 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73538

5.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73538	#FFFFFF	#000000	##FFFFFF
##B73538	1.00	5.87	3.58	5.87
#FFFFFF	5.87	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A5337

Deuteranopia (green-blind)

#7A6F34

Tritanopia (blue-blind)

#C90638

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b73538;
/* rgb */ color: rgb(183, 53, 56);
/* oklch */ color: oklch(52.5% 0.167 23.8);

Tailwind

colors: {
  custom: {
    50: '#d4756e',
    500: '#b73538',
    950: '#000000',
  },
}

SCSS

$custom: #b73538;
$custom-light: #d4756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b73538",
  "rgb": {
    "r": 183,
    "g": 53,
    "b": 56
  },
  "hsl": {
    "h": 358.615,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52542,
    "c": 0.16651,
    "h": 23.8
  },
  "luminance": 0.12899
}

Semantic roles & 50–950 ramp

primary

#B73538

secondary

#81C7C5

accent

#DEDB49

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73538

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

Preview Lab → · Contrast checker → · Palette generator →