#B33F2A#B33F2A

#B33F2A is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.8% C 0.155 H 32.5°. Best body text is #FFFFFF at 5.74:1 contrast (WCAG AA passes).

Color values

HEX	#B33F2A
RGB	rgb(179, 63, 42)
HSL	hsl(9, 62%, 43%)
HSV	hsv(9, 77%, 70%)
CMYK	cmyk(0%, 64.8%, 76.5%, 29.8%)
CIE-LAB	lab(43.23, 45.97, 37.54)
CIE-LCH	lch(43.23, 59.35, 39.24°)
OKLab	oklab(52.81% 0.1307 0.0832)
OKLCH	oklch(52.81% 0.155 32.5)
XYZ	xyz(20.7881, 13.3089, 3.6643)
Luminance	0.1331 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F2A #2A9EB3

analogous

#B32A59 #B33F2A #B3832A

triadic

#B33F2A #2AB33F #3F2AB3

tetradic

#B33F2A #59B32A #2A9EB3 #832AB3

square

#B33F2A #59B32A #2A9EB3 #832AB3

split-complementary

#B33F2A #2AB383 #2A59B3

monochromatic

#501C13 #812E1E #B33F2A #D45C46 #DF8878

Accessibility & contrast

On white

5.74

#B33F2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.66

#B33F2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F2A

5.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F2A	#FFFFFF	#000000	##FFFFFF
##B33F2A	1.00	5.74	3.66	5.74
#FFFFFF	5.74	1.00	21.00	1.00
#000000	3.66	21.00	1.00	21.00
##FFFFFF	5.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#605627

Deuteranopia (green-blind)

#7C7026

Tritanopia (blue-blind)

#C5203B

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33f2a;
/* rgb */ color: rgb(179, 63, 42);
/* oklch */ color: oklch(52.8% 0.155 32.5);

Tailwind

colors: {
  custom: {
    50: '#d27a65',
    500: '#b33f2a',
    950: '#000000',
  },
}

SCSS

$custom: #b33f2a;
$custom-light: #d27a65;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f2a",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 42
  },
  "hsl": {
    "h": 9.197,
    "s": 61.991,
    "l": 43.333
  },
  "oklch": {
    "l": 0.52808,
    "c": 0.15495,
    "h": 32.5
  },
  "luminance": 0.13306
}

Semantic roles & 50–950 ramp

primary

#B33F2A

secondary

#72BAC7

accent

#CCE543

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B33F2A

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

Preview Lab → · Contrast checker → · Palette generator →