#B63D31#B63D31

#B63D31 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.2% C 0.159 H 29.1°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#B63D31
RGB	rgb(182, 61, 49)
HSL	hsl(5, 58%, 45%)
HSV	hsv(5, 73%, 71%)
CMYK	cmyk(0%, 66.5%, 73.1%, 28.6%)
CIE-LAB	lab(43.52, 48.19, 34.09)
CIE-LCH	lch(43.52, 59.03, 35.28°)
OKLab	oklab(53.15% 0.1387 0.0772)
OKLCH	oklch(53.15% 0.159 29.1)
XYZ	xyz(21.5169, 13.5074, 4.3793)
Luminance	0.1350 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63D31 #31AAB6

analogous

#B63167 #B63D31 #B68031

triadic

#B63D31 #31B63D #3D31B6

tetradic

#B63D31 #67B631 #31AAB6 #8031B6

square

#B63D31 #67B631 #31AAB6 #8031B6

split-complementary

#B63D31 #31B680 #3167B6

monochromatic

#561D17 #862D24 #B63D31 #D15F53 #DE8C84

Accessibility & contrast

On white

5.67

#B63D31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#B63D31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63D31

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63D31	#FFFFFF	#000000	##FFFFFF
##B63D31	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F562F

Deuteranopia (green-blind)

#7D712D

Tritanopia (blue-blind)

#C81C3B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b63d31;
/* rgb */ color: rgb(182, 61, 49);
/* oklch */ color: oklch(53.2% 0.159 29.1);

Tailwind

colors: {
  custom: {
    50: '#d4796a',
    500: '#b63d31',
    950: '#000000',
  },
}

SCSS

$custom: #b63d31;
$custom-light: #d4796a;
$custom-dark: #000000;

JSON

{
  "hex": "#b63d31",
  "rgb": {
    "r": 182,
    "g": 61,
    "b": 49
  },
  "hsl": {
    "h": 5.414,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.53153,
    "c": 0.15874,
    "h": 29.1
  },
  "luminance": 0.13504
}

Semantic roles & 50–950 ramp

primary

#B63D31

secondary

#7CC0C7

accent

#D3E147

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63D31

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

Preview Lab → · Contrast checker → · Palette generator →