#B73437#B73437

#B73437 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.4% C 0.168 H 23.9°. Best body text is #FFFFFF at 5.90:1 contrast (WCAG AA passes).

Color values

HEX	#B73437
RGB	rgb(183, 52, 55)
HSL	hsl(359, 56%, 46%)
HSV	hsv(359, 72%, 72%)
CMYK	cmyk(0%, 71.6%, 69.9%, 28.2%)
CIE-LAB	lab(42.46, 52.41, 29.39)
CIE-LCH	lch(42.46, 60.09, 29.29°)
OKLab	oklab(52.42% 0.1532 0.068)
OKLCH	oklch(52.42% 0.168 23.9)
XYZ	xyz(21.4484, 12.8023, 4.9554)
Luminance	0.1280 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73437 #34B7B4

analogous

#B73478 #B73437 #B77234

triadic

#B73437 #37B734 #3437B7

tetradic

#B73437 #78B734 #34B7B4 #7234B7

square

#B73437 #78B734 #34B7B4 #7234B7

split-complementary

#B73437 #34B772 #3478B7

monochromatic

#58191A #872629 #B73437 #D0595B #DD888A

Accessibility & contrast

On white

5.90

#B73437 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B73437 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73437

5.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73437	#FFFFFF	#000000	##FFFFFF
##B73437	1.00	5.90	3.56	5.90
#FFFFFF	5.90	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595236

Deuteranopia (green-blind)

#7A6F33

Tritanopia (blue-blind)

#C90237

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b73437;
/* rgb */ color: rgb(183, 52, 55);
/* oklch */ color: oklch(52.4% 0.168 23.9);

Tailwind

colors: {
  custom: {
    50: '#d4756e',
    500: '#b73437',
    950: '#000000',
  },
}

SCSS

$custom: #b73437;
$custom-light: #d4756e;
$custom-dark: #000000;

JSON

{
  "hex": "#b73437",
  "rgb": {
    "r": 183,
    "g": 52,
    "b": 55
  },
  "hsl": {
    "h": 358.626,
    "s": 55.745,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52424,
    "c": 0.16756,
    "h": 23.9
  },
  "luminance": 0.12799
}

Semantic roles & 50–950 ramp

primary

#B73437

secondary

#80C7C6

accent

#DFDC49

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73437

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

Preview Lab → · Contrast checker → · Palette generator →