#B53730#B53730

#B53730 is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.164 H 27.5°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#B53730
RGB	rgb(181, 55, 48)
HSL	hsl(3, 58%, 45%)
HSV	hsv(3, 73%, 71%)
CMYK	cmyk(0%, 69.6%, 73.5%, 29%)
CIE-LAB	lab(42.42, 50.27, 33.37)
CIE-LCH	lch(42.42, 60.34, 33.58°)
OKLab	oklab(52.29% 0.1452 0.0755)
OKLCH	oklch(52.29% 0.164 27.5)
XYZ	xyz(20.9581, 12.7726, 4.1575)
Luminance	0.1277 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B53730 #30AEB5

analogous

#B5306B #B53730 #B57A30

triadic

#B53730 #30B537 #3730B5

tetradic

#B53730 #6BB530 #30AEB5 #7A30B5

square

#B53730 #6BB530 #30AEB5 #7A30B5

split-complementary

#B53730 #30B57A #306BB5

monochromatic

#541A16 #852823 #B53730 #D15851 #DE8682

Accessibility & contrast

On white

5.91

#B53730 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#B53730 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B53730

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B53730	#FFFFFF	#000000	##FFFFFF
##B53730	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)

#5B532E

Deuteranopia (green-blind)

#7A6E2C

Tritanopia (blue-blind)

#C70C37

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b53730;
/* rgb */ color: rgb(181, 55, 48);
/* oklch */ color: oklch(52.3% 0.164 27.5);

Tailwind

colors: {
  custom: {
    50: '#d37669',
    500: '#b53730',
    950: '#000000',
  },
}

SCSS

$custom: #b53730;
$custom-light: #d37669;
$custom-dark: #000000;

JSON

{
  "hex": "#b53730",
  "rgb": {
    "r": 181,
    "g": 55,
    "b": 48
  },
  "hsl": {
    "h": 3.158,
    "s": 58.079,
    "l": 44.902
  },
  "oklch": {
    "l": 0.52292,
    "c": 0.1636,
    "h": 27.5
  },
  "luminance": 0.1277
}

Semantic roles & 50–950 ramp

primary

#B53730

secondary

#7AC3C7

accent

#D9E146

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B53730

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

Preview Lab → · Contrast checker → · Palette generator →