#B63143#B63143

#B63143 is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.2% C 0.169 H 17.9°. Best body text is #FFFFFF at 5.98:1 contrast (WCAG AA passes).

Color values

HEX	#B63143
RGB	rgb(182, 49, 67)
HSL	hsl(352, 58%, 45%)
HSV	hsv(352, 73%, 71%)
CMYK	cmyk(0%, 73.1%, 63.2%, 28.6%)
CIE-LAB	lab(42.08, 53.87, 21.55)
CIE-LCH	lch(42.08, 58.02, 21.81°)
OKLab	oklab(52.17% 0.1604 0.0519)
OKLCH	oklch(52.17% 0.169 17.9)
XYZ	xyz(21.4050, 12.5501, 6.6044)
Luminance	0.1255 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63143 #31B6A4

analogous

#B63185 #B63143 #B66231

triadic

#B63143 #43B631 #3143B6

tetradic

#B63143 #85B631 #31B6A4 #6231B6

square

#B63143 #85B631 #31B6A4 #6231B6

split-complementary

#B63143 #31B662 #3185B6

monochromatic

#56171F #862431 #B63143 #D15364 #DE8490

Accessibility & contrast

On white

5.98

#B63143 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.51

#B63143 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63143

5.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63143	#FFFFFF	#000000	##FFFFFF
##B63143	1.00	5.98	3.51	5.98
#FFFFFF	5.98	1.00	21.00	1.00
#000000	3.51	21.00	1.00	21.00
##FFFFFF	5.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#565143

Deuteranopia (green-blind)

#776D3F

Tritanopia (blue-blind)

#C80139

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b63143;
/* rgb */ color: rgb(182, 49, 67);
/* oklch */ color: oklch(52.2% 0.169 17.9);

Tailwind

colors: {
  custom: {
    50: '#d37377',
    500: '#b63143',
    950: '#000000',
  },
}

SCSS

$custom: #b63143;
$custom-light: #d37377;
$custom-dark: #000000;

JSON

{
  "hex": "#b63143",
  "rgb": {
    "r": 182,
    "g": 49,
    "b": 67
  },
  "hsl": {
    "h": 351.88,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.52166,
    "c": 0.16863,
    "h": 17.9
  },
  "luminance": 0.12547
}

Semantic roles & 50–950 ramp

primary

#B63143

secondary

#7CC7BD

accent

#E1CC47

background

#FDF7F7

surface

#FBEDED

border

#D4C8C8

text

#150908

muted

#837B7B

Preview Lab

Preview with #B63143

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

Preview Lab → · Contrast checker → · Palette generator →