#B73128#B73128

#B73128 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.9% C 0.172 H 28.5°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#B73128
RGB	rgb(183, 49, 40)
HSL	hsl(4, 64%, 44%)
HSV	hsv(4, 78%, 72%)
CMYK	cmyk(0%, 73.2%, 78.1%, 28.2%)
CIE-LAB	lab(41.88, 52.86, 37.44)
CIE-LCH	lch(41.88, 64.78, 35.31°)
OKLab	oklab(51.93% 0.1514 0.0821)
OKLCH	oklch(51.93% 0.172 28.5)
XYZ	xyz(21.0122, 12.4204, 3.2981)
Luminance	0.1242 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73128 #28AEB7

analogous

#B72866 #B73128 #B77828

triadic

#B73128 #28B731 #3128B7

tetradic

#B73128 #66B728 #28AEB7 #7828B7

square

#B73128 #66B728 #28AEB7 #7828B7

split-complementary

#B73128 #28B778 #2866B7

monochromatic

#531612 #85241D #B73128 #D64F46 #E17F78

Accessibility & contrast

On white

6.03

#B73128 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B73128 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73128

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73128	#FFFFFF	#000000	##FFFFFF
##B73128	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595026

Deuteranopia (green-blind)

#7A6D22

Tritanopia (blue-blind)

#CA0030

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b73128;
/* rgb */ color: rgb(183, 49, 40);
/* oklch */ color: oklch(51.9% 0.172 28.5);

Tailwind

colors: {
  custom: {
    50: '#d67363',
    500: '#b73128',
    950: '#000000',
  },
}

SCSS

$custom: #b73128;
$custom-light: #d67363;
$custom-dark: #000000;

JSON

{
  "hex": "#b73128",
  "rgb": {
    "r": 183,
    "g": 49,
    "b": 40
  },
  "hsl": {
    "h": 3.776,
    "s": 64.126,
    "l": 43.725
  },
  "oklch": {
    "l": 0.51926,
    "c": 0.17225,
    "h": 28.5
  },
  "luminance": 0.12417
}

Semantic roles & 50–950 ramp

primary

#B73128

secondary

#72C4C9

accent

#DDE741

background

#FEF7F5

surface

#FCEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #B73128

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

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