#B63733#B63733

#B63733 is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.5% C 0.164 H 26.3°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#B63733
RGB	rgb(182, 55, 51)
HSL	hsl(2, 56%, 46%)
HSV	hsv(2, 72%, 71%)
CMYK	cmyk(0%, 69.8%, 72%, 28.6%)
CIE-LAB	lab(42.64, 50.74, 31.93)
CIE-LCH	lch(42.64, 59.95, 32.18°)
OKLab	oklab(52.51% 0.1472 0.0729)
OKLCH	oklch(52.51% 0.164 26.3)
XYZ	xyz(21.2575, 12.9196, 4.5057)
Luminance	0.1292 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63733 #33B2B6

analogous

#B63370 #B63733 #B67833

triadic

#B63733 #33B637 #3733B6

tetradic

#B63733 #70B633 #33B2B6 #7833B6

square

#B63733 #70B633 #33B2B6 #7833B6

split-complementary

#B63733 #33B678 #3370B6

monochromatic

#561A18 #862926 #B63733 #D05A56 #DD8986

Accessibility & contrast

On white

5.86

#B63733 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#B63733 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63733

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63733	#FFFFFF	#000000	##FFFFFF
##B63733	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5331

Deuteranopia (green-blind)

#7B6F2F

Tritanopia (blue-blind)

#C80C37

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b63733;
/* rgb */ color: rgb(182, 55, 51);
/* oklch */ color: oklch(52.5% 0.164 26.3);

Tailwind

colors: {
  custom: {
    50: '#d4766b',
    500: '#b63733',
    950: '#000000',
  },
}

SCSS

$custom: #b63733;
$custom-light: #d4766b;
$custom-dark: #000000;

JSON

{
  "hex": "#b63733",
  "rgb": {
    "r": 182,
    "g": 55,
    "b": 51
  },
  "hsl": {
    "h": 1.832,
    "s": 56.223,
    "l": 45.686
  },
  "oklch": {
    "l": 0.52505,
    "c": 0.1642,
    "h": 26.3
  },
  "luminance": 0.12916
}

Semantic roles & 50–950 ramp

primary

#B63733

secondary

#7EC5C7

accent

#DBE048

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63733

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

Preview Lab → · Contrast checker → · Palette generator →