#B63F2B#B63F2B

#B63F2B is a mid, vivid red. Relative luminance 0.137; OKLCH L 53.3% C 0.158 H 32.0°. Best body text is #FFFFFF at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#B63F2B
RGB	rgb(182, 63, 43)
HSL	hsl(9, 62%, 44%)
HSV	hsv(9, 76%, 71%)
CMYK	cmyk(0%, 65.4%, 76.4%, 28.6%)
CIE-LAB	lab(43.77, 47.07, 37.73)
CIE-LCH	lch(43.77, 60.33, 38.71°)
OKLab	oklab(53.32% 0.134 0.0837)
OKLCH	oklch(53.32% 0.158 32)
XYZ	xyz(21.5073, 13.6776, 3.7926)
Luminance	0.1368 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63F2B #2BA2B6

analogous

#B62B5D #B63F2B #B6852B

triadic

#B63F2B #2BB63F #3F2BB6

tetradic

#B63F2B #5DB62B #2BA2B6 #852BB6

square

#B63F2B #5DB62B #2BA2B6 #852BB6

split-complementary

#B63F2B #2BB685 #2B5DB6

monochromatic

#531D14 #842E1F #B63F2B #D45E4A #E08A7B

Accessibility & contrast

On white

5.62

#B63F2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.74

#B63F2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63F2B

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63F2B	#FFFFFF	#000000	##FFFFFF
##B63F2B	1.00	5.62	3.74	5.62
#FFFFFF	5.62	1.00	21.00	1.00
#000000	3.74	21.00	1.00	21.00
##FFFFFF	5.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#615728

Deuteranopia (green-blind)

#7E7127

Tritanopia (blue-blind)

#C81E3B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63f2b;
/* rgb */ color: rgb(182, 63, 43);
/* oklch */ color: oklch(53.3% 0.158 32.0);

Tailwind

colors: {
  custom: {
    50: '#d47a65',
    500: '#b63f2b',
    950: '#000000',
  },
}

SCSS

$custom: #b63f2b;
$custom-light: #d47a65;
$custom-dark: #000000;

JSON

{
  "hex": "#b63f2b",
  "rgb": {
    "r": 182,
    "g": 63,
    "b": 43
  },
  "hsl": {
    "h": 8.633,
    "s": 61.778,
    "l": 44.118
  },
  "oklch": {
    "l": 0.53318,
    "c": 0.15798,
    "h": 32
  },
  "luminance": 0.13675
}

Semantic roles & 50–950 ramp

primary

#B63F2B

secondary

#75BCC8

accent

#CEE543

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160A06

muted

#847C7A

Preview Lab

Preview with #B63F2B

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

Preview Lab → · Contrast checker → · Palette generator →