#B73A35#B73A35

#B73A35 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.0% C 0.162 H 26.5°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#B73A35
RGB	rgb(183, 58, 53)
HSL	hsl(2, 55%, 46%)
HSV	hsv(2, 71%, 72%)
CMYK	cmyk(0%, 68.3%, 71%, 28.2%)
CIE-LAB	lab(43.29, 49.96, 31.56)
CIE-LCH	lch(43.29, 59.10, 32.28°)
OKLab	oklab(53.03% 0.145 0.0724)
OKLCH	oklch(53.03% 0.162 26.5)
XYZ	xyz(21.6864, 13.3536, 4.8030)
Luminance	0.1335 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A35 #35B2B7

analogous

#B73571 #B73A35 #B77B35

triadic

#B73A35 #35B73A #3A35B7

tetradic

#B73A35 #71B735 #35B2B7 #7B35B7

square

#B73A35 #71B735 #35B2B7 #7B35B7

split-complementary

#B73A35 #35B77B #3571B7

monochromatic

#581C1A #882B27 #B73A35 #CF5F5A #DD8D89

Accessibility & contrast

On white

5.72

#B73A35 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#B73A35 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A35

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A35	#FFFFFF	#000000	##FFFFFF
##B73A35	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5533

Deuteranopia (green-blind)

#7C7031

Tritanopia (blue-blind)

#C9153A

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73a35;
/* rgb */ color: rgb(183, 58, 53);
/* oklch */ color: oklch(53.0% 0.162 26.5);

Tailwind

colors: {
  custom: {
    50: '#d4786c',
    500: '#b73a35',
    950: '#000000',
  },
}

SCSS

$custom: #b73a35;
$custom-light: #d4786c;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a35",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 53
  },
  "hsl": {
    "h": 2.308,
    "s": 55.085,
    "l": 46.275
  },
  "oklch": {
    "l": 0.53034,
    "c": 0.16207,
    "h": 26.5
  },
  "luminance": 0.1335
}

Semantic roles & 50–950 ramp

primary

#B73A35

secondary

#81C4C7

accent

#D9DE49

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B73A35

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

Preview Lab → · Contrast checker → · Palette generator →