#B73A2E#B73A2E

#B73A2E is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.9% C 0.163 H 29.1°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#B73A2E
RGB	rgb(183, 58, 46)
HSL	hsl(5, 60%, 45%)
HSV	hsv(5, 75%, 72%)
CMYK	cmyk(0%, 68.3%, 74.9%, 28.2%)
CIE-LAB	lab(43.20, 49.64, 35.50)
CIE-LCH	lch(43.20, 61.03, 35.57°)
OKLab	oklab(52.94% 0.1426 0.0795)
OKLCH	oklch(52.94% 0.163 29.1)
XYZ	xyz(21.5370, 13.2938, 4.0162)
Luminance	0.1329 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A2E #2EABB7

analogous

#B72E67 #B73A2E #B77E2E

triadic

#B73A2E #2EB73A #3A2EB7

tetradic

#B73A2E #67B72E #2EABB7 #7E2EB7

square

#B73A2E #67B72E #2EABB7 #7E2EB7

split-complementary

#B73A2E #2EB77E #2E67B7

monochromatic

#551B15 #862A22 #B73A2E #D35B4F #DF8980

Accessibility & contrast

On white

5.74

#B73A2E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B73A2E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A2E

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A2E	#FFFFFF	#000000	##FFFFFF
##B73A2E	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E552C

Deuteranopia (green-blind)

#7D702A

Tritanopia (blue-blind)

#C91338

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73a2e;
/* rgb */ color: rgb(183, 58, 46);
/* oklch */ color: oklch(52.9% 0.163 29.1);

Tailwind

colors: {
  custom: {
    50: '#d57767',
    500: '#b73a2e',
    950: '#000000',
  },
}

SCSS

$custom: #b73a2e;
$custom-light: #d57767;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a2e",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 46
  },
  "hsl": {
    "h": 5.255,
    "s": 59.825,
    "l": 44.902
  },
  "oklch": {
    "l": 0.52939,
    "c": 0.16322,
    "h": 29.1
  },
  "luminance": 0.13291
}

Semantic roles & 50–950 ramp

primary

#B73A2E

secondary

#79C1C8

accent

#D5E345

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73A2E

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

Preview Lab → · Contrast checker → · Palette generator →