#B63D3F#B63D3F

#B63D3F is a mid, vivid red. Relative luminance 0.136; OKLCH L 53.4% C 0.157 H 23.2°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#B63D3F
RGB	rgb(182, 61, 63)
HSL	hsl(359, 50%, 48%)
HSV	hsv(359, 66%, 71%)
CMYK	cmyk(0%, 66.5%, 65.4%, 28.6%)
CIE-LAB	lab(43.72, 48.93, 26.08)
CIE-LCH	lch(43.72, 55.45, 28.06°)
OKLab	oklab(53.37% 0.1439 0.0618)
OKLCH	oklch(53.37% 0.157 23.2)
XYZ	xyz(21.8596, 13.6445, 6.1843)
Luminance	0.1364 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63D3F #3DB6B4

analogous

#B63D7C #B63D3F #B6773D

triadic

#B63D3F #3FB63D #3D3FB6

tetradic

#B63D3F #7CB63D #3DB6B4 #773DB6

square

#B63D3F #7CB63D #3DB6B4 #773DB6

split-complementary

#B63D3F #3DB677 #3D7CB6

monochromatic

#5A1E1F #882E2F #B63D3F #CB6567 #DB9394

Accessibility & contrast

On white

5.63

#B63D3F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#B63D3F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63D3F

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63D3F	#FFFFFF	#000000	##FFFFFF
##B63D3F	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D573E

Deuteranopia (green-blind)

#7C713C

Tritanopia (blue-blind)

#C8203F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63d3f;
/* rgb */ color: rgb(182, 61, 63);
/* oklch */ color: oklch(53.4% 0.157 23.2);

Tailwind

colors: {
  custom: {
    50: '#d37974',
    500: '#b63d3f',
    950: '#000000',
  },
}

SCSS

$custom: #b63d3f;
$custom-light: #d37974;
$custom-dark: #000000;

JSON

{
  "hex": "#b63d3f",
  "rgb": {
    "r": 182,
    "g": 61,
    "b": 63
  },
  "hsl": {
    "h": 359.008,
    "s": 49.794,
    "l": 47.647
  },
  "oklch": {
    "l": 0.53368,
    "c": 0.15663,
    "h": 23.2
  },
  "luminance": 0.13641
}

Semantic roles & 50–950 ramp

primary

#B63D3F

secondary

#89C6C5

accent

#D9D74E

background

#FDF7F7

surface

#FBEEED

border

#D4C9C8

text

#150A08

muted

#837C7B

Preview Lab

Preview with #B63D3F

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

Preview Lab → · Contrast checker → · Palette generator →