#B73A40#B73A40

#B73A40 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.2% C 0.161 H 21.9°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#B73A40
RGB	rgb(183, 58, 64)
HSL	hsl(357, 52%, 47%)
HSV	hsv(357, 68%, 72%)
CMYK	cmyk(0%, 68.3%, 65%, 28.2%)
CIE-LAB	lab(43.46, 50.57, 25.19)
CIE-LCH	lch(43.46, 56.49, 26.48°)
OKLab	oklab(53.21% 0.1492 0.0599)
OKLCH	oklch(53.21% 0.161 21.9)
XYZ	xyz(21.9692, 13.4667, 6.2920)
Luminance	0.1346 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A40 #3AB7B1

analogous

#B73A7F #B73A40 #B7733A

triadic

#B73A40 #40B73A #3A40B7

tetradic

#B73A40 #7FB73A #3AB7B1 #733AB7

square

#B73A40 #7FB73A #3AB7B1 #733AB7

split-complementary

#B73A40 #3AB773 #3A7FB7

monochromatic

#5A1D1F #892B30 #B73A40 #CD6166 #DC9093

Accessibility & contrast

On white

5.69

#B73A40 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B73A40 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A40

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A40	#FFFFFF	#000000	##FFFFFF
##B73A40	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C563F

Deuteranopia (green-blind)

#7B703C

Tritanopia (blue-blind)

#C9193D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b73a40;
/* rgb */ color: rgb(183, 58, 64);
/* oklch */ color: oklch(53.2% 0.161 21.9);

Tailwind

colors: {
  custom: {
    50: '#d47874',
    500: '#b73a40',
    950: '#000000',
  },
}

SCSS

$custom: #b73a40;
$custom-light: #d47874;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a40",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 64
  },
  "hsl": {
    "h": 357.12,
    "s": 51.867,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53212,
    "c": 0.16074,
    "h": 21.9
  },
  "luminance": 0.13464
}

Semantic roles & 50–950 ramp

primary

#B73A40

secondary

#86C7C3

accent

#DBD44C

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B73A40

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

Preview Lab → · Contrast checker → · Palette generator →