#B63133#B63133

#B63133 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.9% C 0.170 H 24.6°. Best body text is #FFFFFF at 6.04:1 contrast (WCAG AA passes).

Color values

HEX	#B63133
RGB	rgb(182, 49, 51)
HSL	hsl(359, 58%, 45%)
HSV	hsv(359, 73%, 71%)
CMYK	cmyk(0%, 73.1%, 72%, 28.6%)
CIE-LAB	lab(41.82, 53.00, 30.97)
CIE-LCH	lch(41.82, 61.38, 30.30°)
OKLab	oklab(51.89% 0.1543 0.0708)
OKLCH	oklch(51.89% 0.17 24.6)
XYZ	xyz(20.9896, 12.3839, 4.4164)
Luminance	0.1238 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B63133 #31B6B4

analogous

#B63175 #B63133 #B67231

triadic

#B63133 #33B631 #3133B6

tetradic

#B63133 #75B631 #31B6B4 #7231B6

square

#B63133 #75B631 #31B6B4 #7231B6

split-complementary

#B63133 #31B672 #3175B6

monochromatic

#561718 #862425 #B63133 #D15355 #DE8485

Accessibility & contrast

On white

6.04

#B63133 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#B63133 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B63133

6.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B63133	#FFFFFF	#000000	##FFFFFF
##B63133	1.00	6.04	3.48	6.04
#FFFFFF	6.04	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#585032

Deuteranopia (green-blind)

#796D2E

Tritanopia (blue-blind)

#C80033

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b63133;
/* rgb */ color: rgb(182, 49, 51);
/* oklch */ color: oklch(51.9% 0.170 24.6);

Tailwind

colors: {
  custom: {
    50: '#d4736b',
    500: '#b63133',
    950: '#000000',
  },
}

SCSS

$custom: #b63133;
$custom-light: #d4736b;
$custom-dark: #000000;

JSON

{
  "hex": "#b63133",
  "rgb": {
    "r": 182,
    "g": 49,
    "b": 51
  },
  "hsl": {
    "h": 359.098,
    "s": 57.576,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51892,
    "c": 0.16975,
    "h": 24.6
  },
  "luminance": 0.12381
}

Semantic roles & 50–950 ramp

primary

#B63133

secondary

#7CC7C6

accent

#E1DF47

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B63133

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

Preview Lab → · Contrast checker → · Palette generator →