#B73A2F#B73A2F

#B73A2F is a mid, vivid red. Relative luminance 0.133; OKLCH L 53.0% C 0.163 H 28.8°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#B73A2F
RGB	rgb(183, 58, 47)
HSL	hsl(5, 59%, 45%)
HSV	hsv(5, 74%, 72%)
CMYK	cmyk(0%, 68.3%, 74.3%, 28.2%)
CIE-LAB	lab(43.21, 49.69, 34.94)
CIE-LCH	lch(43.21, 60.74, 35.12°)
OKLab	oklab(52.95% 0.1429 0.0785)
OKLCH	oklch(52.95% 0.163 28.8)
XYZ	xyz(21.5570, 13.3018, 4.1212)
Luminance	0.1330 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73A2F #2FACB7

analogous

#B72F68 #B73A2F #B77E2F

triadic

#B73A2F #2FB73A #3A2FB7

tetradic

#B73A2F #68B72F #2FACB7 #7E2FB7

square

#B73A2F #68B72F #2FACB7 #7E2FB7

split-complementary

#B73A2F #2FB77E #2F68B7

monochromatic

#561B16 #862B22 #B73A2F #D25B51 #DF8982

Accessibility & contrast

On white

5.74

#B73A2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B73A2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73A2F

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73A2F	#FFFFFF	#000000	##FFFFFF
##B73A2F	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)

#5E552D

Deuteranopia (green-blind)

#7D702B

Tritanopia (blue-blind)

#C91338

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73a2f;
/* rgb */ color: rgb(183, 58, 47);
/* oklch */ color: oklch(53.0% 0.163 28.8);

Tailwind

colors: {
  custom: {
    50: '#d57768',
    500: '#b73a2f',
    950: '#000000',
  },
}

SCSS

$custom: #b73a2f;
$custom-light: #d57768;
$custom-dark: #000000;

JSON

{
  "hex": "#b73a2f",
  "rgb": {
    "r": 183,
    "g": 58,
    "b": 47
  },
  "hsl": {
    "h": 4.853,
    "s": 59.13,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52951,
    "c": 0.16304,
    "h": 28.8
  },
  "luminance": 0.13299
}

Semantic roles & 50–950 ramp

primary

#B73A2F

secondary

#7AC2C8

accent

#D6E245

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73A2F

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

Preview Lab → · Contrast checker → · Palette generator →