#B33F2B#B33F2B

#B33F2B is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.8% C 0.155 H 32.1°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#B33F2B
RGB	rgb(179, 63, 43)
HSL	hsl(9, 61%, 44%)
HSV	hsv(9, 76%, 70%)
CMYK	cmyk(0%, 64.8%, 76%, 29.8%)
CIE-LAB	lab(43.24, 46.01, 37.00)
CIE-LCH	lch(43.24, 59.05, 38.81°)
OKLab	oklab(52.82% 0.1311 0.0823)
OKLCH	oklch(52.82% 0.155 32.1)
XYZ	xyz(20.8062, 13.3161, 3.7597)
Luminance	0.1331 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F2B #2B9FB3

analogous

#B32B5B #B33F2B #B3832B

triadic

#B33F2B #2BB33F #3F2BB3

tetradic

#B33F2B #5BB32B #2B9FB3 #832BB3

square

#B33F2B #5BB32B #2B9FB3 #832BB3

split-complementary

#B33F2B #2BB383 #2B5BB3

monochromatic

#501C13 #822E1F #B33F2B #D35D48 #DF8879

Accessibility & contrast

On white

5.73

#B33F2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B33F2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F2B

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F2B	#FFFFFF	#000000	##FFFFFF
##B33F2B	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)

#605628

Deuteranopia (green-blind)

#7C7027

Tritanopia (blue-blind)

#C5203B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33f2b;
/* rgb */ color: rgb(179, 63, 43);
/* oklch */ color: oklch(52.8% 0.155 32.1);

Tailwind

colors: {
  custom: {
    50: '#d27a65',
    500: '#b33f2b',
    950: '#000000',
  },
}

SCSS

$custom: #b33f2b;
$custom-light: #d27a65;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f2b",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 43
  },
  "hsl": {
    "h": 8.824,
    "s": 61.261,
    "l": 43.529
  },
  "oklch": {
    "l": 0.52819,
    "c": 0.15473,
    "h": 32.1
  },
  "luminance": 0.13313
}

Semantic roles & 50–950 ramp

primary

#B33F2B

secondary

#73BBC7

accent

#CDE443

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33F2B

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

Preview Lab → · Contrast checker → · Palette generator →