#B63531#B63531

#B63531 is a mid, vivid red. Relative luminance 0.127; OKLCH L 52.3% C 0.166 H 26.5°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#B63531
RGB	rgb(182, 53, 49)
HSL	hsl(2, 58%, 45%)
HSV	hsv(2, 73%, 71%)
CMYK	cmyk(0%, 70.9%, 73.1%, 28.6%)
CIE-LAB	lab(42.33, 51.42, 32.74)
CIE-LCH	lch(42.33, 60.96, 32.49°)
OKLab	oklab(52.27% 0.1489 0.0742)
OKLCH	oklch(52.27% 0.166 26.5)
XYZ	xyz(21.1212, 12.7162, 4.2475)
Luminance	0.1271 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63531 #31B2B6

analogous

#B6316F #B63531 #B67831

triadic

#B63531 #31B635 #3531B6

tetradic

#B63531 #6FB631 #31B2B6 #7831B6

square

#B63531 #6FB631 #31B2B6 #7831B6

split-complementary

#B63531 #31B678 #316FB6

monochromatic

#561917 #862724 #B63531 #D15753 #DE8684

Accessibility & contrast

On white

5.93

#B63531 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#B63531 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63531

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63531	#FFFFFF	#000000	##FFFFFF
##B63531	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A522F

Deuteranopia (green-blind)

#7A6E2D

Tritanopia (blue-blind)

#C80335

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b63531;
/* rgb */ color: rgb(182, 53, 49);
/* oklch */ color: oklch(52.3% 0.166 26.5);

Tailwind

colors: {
  custom: {
    50: '#d47569',
    500: '#b63531',
    950: '#000000',
  },
}

SCSS

$custom: #b63531;
$custom-light: #d47569;
$custom-dark: #000000;

JSON

{
  "hex": "#b63531",
  "rgb": {
    "r": 182,
    "g": 53,
    "b": 49
  },
  "hsl": {
    "h": 1.805,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.52266,
    "c": 0.16636,
    "h": 26.5
  },
  "luminance": 0.12713
}

Semantic roles & 50–950 ramp

primary

#B63531

secondary

#7CC5C7

accent

#DCE147

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63531

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

Preview Lab → · Contrast checker → · Palette generator →