#B63C37#B63C37

#B63C37 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.1% C 0.159 H 26.4°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#B63C37
RGB	rgb(182, 60, 55)
HSL	hsl(2, 54%, 46%)
HSV	hsv(2, 70%, 71%)
CMYK	cmyk(0%, 67%, 69.8%, 28.6%)
CIE-LAB	lab(43.44, 48.90, 30.52)
CIE-LCH	lch(43.44, 57.64, 31.96°)
OKLab	oklab(53.12% 0.1422 0.0705)
OKLCH	oklch(53.12% 0.159 26.4)
XYZ	xyz(21.5991, 13.4557, 5.0736)
Luminance	0.1345 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63C37 #37B1B6

analogous

#B63772 #B63C37 #B67C37

triadic

#B63C37 #37B63C #3C37B6

tetradic

#B63C37 #72B637 #37B1B6 #7C37B6

square

#B63C37 #72B637 #37B1B6 #7C37B6

split-complementary

#B63C37 #37B67C #3772B6

monochromatic

#581D1B #872D29 #B63C37 #CE615C #DC8F8B

Accessibility & contrast

On white

5.69

#B63C37 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B63C37 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63C37

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63C37	#FFFFFF	#000000	##FFFFFF
##B63C37	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5635

Deuteranopia (green-blind)

#7C7033

Tritanopia (blue-blind)

#C81B3C

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63c37;
/* rgb */ color: rgb(182, 60, 55);
/* oklch */ color: oklch(53.1% 0.159 26.4);

Tailwind

colors: {
  custom: {
    50: '#d3796e',
    500: '#b63c37',
    950: '#000000',
  },
}

SCSS

$custom: #b63c37;
$custom-light: #d3796e;
$custom-dark: #000000;

JSON

{
  "hex": "#b63c37",
  "rgb": {
    "r": 182,
    "g": 60,
    "b": 55
  },
  "hsl": {
    "h": 2.362,
    "s": 53.586,
    "l": 46.471
  },
  "oklch": {
    "l": 0.53122,
    "c": 0.15872,
    "h": 26.4
  },
  "luminance": 0.13453
}

Semantic roles & 50–950 ramp

primary

#B63C37

secondary

#82C4C6

accent

#D7DD4B

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160907

muted

#847B7A

Preview Lab

Preview with #B63C37

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

Preview Lab → · Contrast checker → · Palette generator →