#B33631#B33631

#B33631 is a mid, vivid red. Relative luminance 0.124; OKLCH L 51.9% C 0.162 H 26.7°. Best body text is #FFFFFF at 6.02:1 contrast (WCAG AA passes).

Color values

HEX	#B33631
RGB	rgb(179, 54, 49)
HSL	hsl(2, 57%, 45%)
HSV	hsv(2, 73%, 70%)
CMYK	cmyk(0%, 69.8%, 72.6%, 29.8%)
CIE-LAB	lab(41.92, 50.04, 32.12)
CIE-LCH	lch(41.92, 59.47, 32.70°)
OKLab	oklab(51.85% 0.1449 0.073)
OKLCH	oklch(51.85% 0.162 26.7)
XYZ	xyz(20.4662, 12.4468, 4.2299)
Luminance	0.1244 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33631 #31AEB3

analogous

#B3316D #B33631 #B37731

triadic

#B33631 #31B336 #3631B3

tetradic

#B33631 #6DB331 #31AEB3 #7731B3

square

#B33631 #6DB331 #31AEB3 #7731B3

split-complementary

#B33631 #31B377 #316DB3

monochromatic

#531917 #832824 #B33631 #D05652 #DD8582

Accessibility & contrast

On white

6.02

#B33631 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#B33631 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33631

6.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33631	#FFFFFF	#000000	##FFFFFF
##B33631	1.00	6.02	3.49	6.02
#FFFFFF	6.02	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A522F

Deuteranopia (green-blind)

#796D2D

Tritanopia (blue-blind)

#C50C36

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b33631;
/* rgb */ color: rgb(179, 54, 49);
/* oklch */ color: oklch(51.9% 0.162 26.7);

Tailwind

colors: {
  custom: {
    50: '#d27569',
    500: '#b33631',
    950: '#000000',
  },
}

SCSS

$custom: #b33631;
$custom-light: #d27569;
$custom-dark: #000000;

JSON

{
  "hex": "#b33631",
  "rgb": {
    "r": 179,
    "g": 54,
    "b": 49
  },
  "hsl": {
    "h": 2.308,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.51853,
    "c": 0.16228,
    "h": 26.7
  },
  "luminance": 0.12444
}

Semantic roles & 50–950 ramp

primary

#B33631

secondary

#7AC3C6

accent

#DAE048

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33631

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

Preview Lab → · Contrast checker → · Palette generator →