#B73528#B73528

#B73528 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.169 H 29.6°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#B73528
RGB	rgb(183, 53, 40)
HSL	hsl(5, 64%, 44%)
HSV	hsv(5, 78%, 72%)
CMYK	cmyk(0%, 71%, 78.1%, 28.2%)
CIE-LAB	lab(42.41, 51.38, 38.01)
CIE-LCH	lch(42.41, 63.91, 36.49°)
OKLab	oklab(52.33% 0.1468 0.0833)
OKLCH	oklch(52.33% 0.169 29.6)
XYZ	xyz(21.1870, 12.7699, 3.3563)
Luminance	0.1277 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73528 #28AAB7

analogous

#B72862 #B73528 #B77C28

triadic

#B73528 #28B735 #3528B7

tetradic

#B73528 #62B728 #28AAB7 #7C28B7

square

#B73528 #62B728 #28AAB7 #7C28B7

split-complementary

#B73528 #28B77C #2862B7

monochromatic

#531812 #85261D #B73528 #D65346 #E18278

Accessibility & contrast

On white

5.91

#B73528 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B73528 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73528

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73528	#FFFFFF	#000000	##FFFFFF
##B73528	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5225

Deuteranopia (green-blind)

#7B6F23

Tritanopia (blue-blind)

#CA0033

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b73528;
/* rgb */ color: rgb(183, 53, 40);
/* oklch */ color: oklch(52.3% 0.169 29.6);

Tailwind

colors: {
  custom: {
    50: '#d57563',
    500: '#b73528',
    950: '#000000',
  },
}

SCSS

$custom: #b73528;
$custom-light: #d57563;
$custom-dark: #000000;

JSON

{
  "hex": "#b73528",
  "rgb": {
    "r": 183,
    "g": 53,
    "b": 40
  },
  "hsl": {
    "h": 5.455,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.52328,
    "c": 0.16877,
    "h": 29.6
  },
  "luminance": 0.12767
}

Semantic roles & 50–950 ramp

primary

#B73528

secondary

#72C1C9

accent

#D8E741

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B73528

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

Preview Lab → · Contrast checker → · Palette generator →