#B73B30#B73B30

#B73B30 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.1% C 0.162 H 28.8°. Best body text is #FFFFFF at 5.70:1 contrast (WCAG AA passes).

Color values

HEX	#B73B30
RGB	rgb(183, 59, 48)
HSL	hsl(5, 58%, 45%)
HSV	hsv(5, 74%, 72%)
CMYK	cmyk(0%, 67.8%, 73.8%, 28.2%)
CIE-LAB	lab(43.38, 49.32, 34.55)
CIE-LCH	lch(43.38, 60.22, 35.02°)
OKLab	oklab(53.08% 0.142 0.0779)
OKLCH	oklch(53.08% 0.162 28.8)
XYZ	xyz(21.6283, 13.4118, 4.2456)
Luminance	0.1341 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B73B30 #30ACB7

analogous

#B73068 #B73B30 #B77F30

triadic

#B73B30 #30B73B #3B30B7

tetradic

#B73B30 #68B730 #30ACB7 #7F30B7

square

#B73B30 #68B730 #30ACB7 #7F30B7

split-complementary

#B73B30 #30B77F #3068B7

monochromatic

#561C17 #872B23 #B73B30 #D25D52 #DE8A83

Accessibility & contrast

On white

5.70

#B73B30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.68

#B73B30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B73B30

5.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B73B30	#FFFFFF	#000000	##FFFFFF
##B73B30	1.00	5.70	3.68	5.70
#FFFFFF	5.70	1.00	21.00	1.00
#000000	3.68	21.00	1.00	21.00
##FFFFFF	5.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E552E

Deuteranopia (green-blind)

#7D702C

Tritanopia (blue-blind)

#C91639

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b73b30;
/* rgb */ color: rgb(183, 59, 48);
/* oklch */ color: oklch(53.1% 0.162 28.8);

Tailwind

colors: {
  custom: {
    50: '#d57869',
    500: '#b73b30',
    950: '#000000',
  },
}

SCSS

$custom: #b73b30;
$custom-light: #d57869;
$custom-dark: #000000;

JSON

{
  "hex": "#b73b30",
  "rgb": {
    "r": 183,
    "g": 59,
    "b": 48
  },
  "hsl": {
    "h": 4.889,
    "s": 58.442,
    "l": 45.294
  },
  "oklch": {
    "l": 0.53077,
    "c": 0.16192,
    "h": 28.8
  },
  "luminance": 0.13409
}

Semantic roles & 50–950 ramp

primary

#B73B30

secondary

#7BC1C8

accent

#D5E246

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B73B30

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

Preview Lab → · Contrast checker → · Palette generator →