#B33831#B33831

#B33831 is a mid, vivid red. Relative luminance 0.126; OKLCH L 52.1% C 0.160 H 27.4°. Best body text is #FFFFFF at 5.95:1 contrast (WCAG AA passes).

Color values

HEX	#B33831
RGB	rgb(179, 56, 49)
HSL	hsl(3, 57%, 45%)
HSV	hsv(3, 73%, 70%)
CMYK	cmyk(0%, 68.7%, 72.6%, 29.8%)
CIE-LAB	lab(42.21, 49.24, 32.46)
CIE-LCH	lch(42.21, 58.98, 33.39°)
OKLab	oklab(52.07% 0.1424 0.0738)
OKLCH	oklch(52.07% 0.16 27.4)
XYZ	xyz(20.5612, 12.6368, 4.2616)
Luminance	0.1263 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33831 #31ACB3

analogous

#B3316B #B33831 #B37931

triadic

#B33831 #31B338 #3831B3

tetradic

#B33831 #6BB331 #31ACB3 #7931B3

square

#B33831 #6BB331 #31ACB3 #7931B3

split-complementary

#B33831 #31B379 #316BB3

monochromatic

#531A17 #832924 #B33831 #D05852 #DD8782

Accessibility & contrast

On white

5.95

#B33831 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.53

#B33831 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33831

5.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33831	#FFFFFF	#000000	##FFFFFF
##B33831	1.00	5.95	3.53	5.95
#FFFFFF	5.95	1.00	21.00	1.00
#000000	3.53	21.00	1.00	21.00
##FFFFFF	5.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B532F

Deuteranopia (green-blind)

#796D2D

Tritanopia (blue-blind)

#C51237

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b33831;
/* rgb */ color: rgb(179, 56, 49);
/* oklch */ color: oklch(52.1% 0.160 27.4);

Tailwind

colors: {
  custom: {
    50: '#d27669',
    500: '#b33831',
    950: '#000000',
  },
}

SCSS

$custom: #b33831;
$custom-light: #d27669;
$custom-dark: #000000;

JSON

{
  "hex": "#b33831",
  "rgb": {
    "r": 179,
    "g": 56,
    "b": 49
  },
  "hsl": {
    "h": 3.231,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.52073,
    "c": 0.16036,
    "h": 27.4
  },
  "luminance": 0.12634
}

Semantic roles & 50–950 ramp

primary

#B33831

secondary

#7AC2C6

accent

#D8E048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33831

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

Preview Lab → · Contrast checker → · Palette generator →