#B63F31#B63F31

#B63F31 is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.4% C 0.157 H 29.8°. Best body text is #FFFFFF at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#B63F31
RGB	rgb(182, 63, 49)
HSL	hsl(6, 58%, 45%)
HSV	hsv(6, 73%, 71%)
CMYK	cmyk(0%, 65.4%, 73.1%, 28.6%)
CIE-LAB	lab(43.84, 47.33, 34.45)
CIE-LCH	lch(43.84, 58.54, 36.05°)
OKLab	oklab(53.39% 0.136 0.078)
OKLCH	oklch(53.39% 0.157 29.8)
XYZ	xyz(21.6256, 13.7249, 4.4156)
Luminance	0.1372 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63F31 #31A8B6

analogous

#B63165 #B63F31 #B68231

triadic

#B63F31 #31B63F #3F31B6

tetradic

#B63F31 #65B631 #31A8B6 #8231B6

square

#B63F31 #65B631 #31A8B6 #8231B6

split-complementary

#B63F31 #31B682 #3165B6

monochromatic

#561E17 #862E24 #B63F31 #D16153 #DE8D84

Accessibility & contrast

On white

5.61

#B63F31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#B63F31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63F31

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63F31	#FFFFFF	#000000	##FFFFFF
##B63F31	1.00	5.61	3.74	5.61
#FFFFFF	5.61	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#60572F

Deuteranopia (green-blind)

#7E712D

Tritanopia (blue-blind)

#C8203C

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #b63f31;
/* rgb */ color: rgb(182, 63, 49);
/* oklch */ color: oklch(53.4% 0.157 29.8);

Tailwind

colors: {
  custom: {
    50: '#d47a6a',
    500: '#b63f31',
    950: '#000000',
  },
}

SCSS

$custom: #b63f31;
$custom-light: #d47a6a;
$custom-dark: #000000;

JSON

{
  "hex": "#b63f31",
  "rgb": {
    "r": 182,
    "g": 63,
    "b": 49
  },
  "hsl": {
    "h": 6.316,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.53392,
    "c": 0.15679,
    "h": 29.8
  },
  "luminance": 0.13722
}

Semantic roles & 50–950 ramp

primary

#B63F31

secondary

#7CBFC7

accent

#D1E147

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A06

muted

#847C7A

Preview Lab

Preview with #B63F31

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

Preview Lab → · Contrast checker → · Palette generator →