#B33F2C#B33F2C

#B33F2C is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.8% C 0.155 H 31.8°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#B33F2C
RGB	rgb(179, 63, 44)
HSL	hsl(8, 61%, 44%)
HSV	hsv(8, 75%, 70%)
CMYK	cmyk(0%, 64.8%, 75.4%, 29.8%)
CIE-LAB	lab(43.25, 46.05, 36.46)
CIE-LCH	lch(43.25, 58.74, 38.37°)
OKLab	oklab(52.83% 0.1314 0.0814)
OKLCH	oklch(52.83% 0.155 31.8)
XYZ	xyz(20.8248, 13.3236, 3.8575)
Luminance	0.1332 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F2C #2CA0B3

analogous

#B32C5C #B33F2C #B3822C

triadic

#B33F2C #2CB33F #3F2CB3

tetradic

#B33F2C #5CB32C #2CA0B3 #822CB3

square

#B33F2C #5CB32C #2CA0B3 #822CB3

split-complementary

#B33F2C #2CB382 #2C5CB3

monochromatic

#511C14 #822E20 #B33F2C #D25D4A #DF897B

Accessibility & contrast

On white

5.73

#B33F2C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B33F2C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F2C

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F2C	#FFFFFF	#000000	##FFFFFF
##B33F2C	1.00	5.73	3.66	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605629

Deuteranopia (green-blind)

#7C7028

Tritanopia (blue-blind)

#C5203B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33f2c;
/* rgb */ color: rgb(179, 63, 44);
/* oklch */ color: oklch(52.8% 0.155 31.8);

Tailwind

colors: {
  custom: {
    50: '#d27a66',
    500: '#b33f2c',
    950: '#000000',
  },
}

SCSS

$custom: #b33f2c;
$custom-light: #d27a66;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f2c",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 44
  },
  "hsl": {
    "h": 8.444,
    "s": 60.538,
    "l": 43.725
  },
  "oklch": {
    "l": 0.52831,
    "c": 0.15453,
    "h": 31.8
  },
  "luminance": 0.13321
}

Semantic roles & 50–950 ramp

primary

#B33F2C

secondary

#74BBC7

accent

#CDE444

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33F2C

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

Preview Lab → · Contrast checker → · Palette generator →