#B63D3A#B63D3A

#B63D3A is a mid, vivid red. Relative luminance 0.136; OKLCH L 53.3% C 0.157 H 25.4°. Best body text is #FFFFFF at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#B63D3A
RGB	rgb(182, 61, 58)
HSL	hsl(1, 52%, 47%)
HSV	hsv(1, 68%, 71%)
CMYK	cmyk(0%, 66.5%, 68.1%, 28.6%)
CIE-LAB	lab(43.64, 48.64, 28.98)
CIE-LCH	lch(43.64, 56.62, 30.78°)
OKLab	oklab(53.29% 0.142 0.0676)
OKLCH	oklch(53.29% 0.157 25.4)
XYZ	xyz(21.7261, 13.5911, 5.4815)
Luminance	0.1359 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63D3A #3AB3B6

analogous

#B63A75 #B63D3A #B67B3A

triadic

#B63D3A #3AB63D #3D3AB6

tetradic

#B63D3A #75B63A #3AB3B6 #7B3AB6

square

#B63D3A #75B63A #3AB3B6 #7B3AB6

split-complementary

#B63D3A #3AB67B #3A75B6

monochromatic

#591E1C #882D2B #B63D3A #CD6361 #DB918F

Accessibility & contrast

On white

5.65

#B63D3A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.72

#B63D3A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63D3A

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63D3A	#FFFFFF	#000000	##FFFFFF
##B63D3A	1.00	5.65	3.72	5.65
#FFFFFF	5.65	1.00	21.00	1.00
#000000	3.72	21.00	1.00	21.00
##FFFFFF	5.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5739

Deuteranopia (green-blind)

#7C7136

Tritanopia (blue-blind)

#C81E3D

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63d3a;
/* rgb */ color: rgb(182, 61, 58);
/* oklch */ color: oklch(53.3% 0.157 25.4);

Tailwind

colors: {
  custom: {
    50: '#d37970',
    500: '#b63d3a',
    950: '#000000',
  },
}

SCSS

$custom: #b63d3a;
$custom-light: #d37970;
$custom-dark: #000000;

JSON

{
  "hex": "#b63d3a",
  "rgb": {
    "r": 182,
    "g": 61,
    "b": 58
  },
  "hsl": {
    "h": 1.452,
    "s": 51.667,
    "l": 47.059
  },
  "oklch": {
    "l": 0.53285,
    "c": 0.15727,
    "h": 25.4
  },
  "luminance": 0.13588
}

Semantic roles & 50–950 ramp

primary

#B63D3A

secondary

#86C5C6

accent

#D8DB4D

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B63D3A

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

Preview Lab → · Contrast checker → · Palette generator →