#B33A2F#B33A2F

#B33A2F is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.3% C 0.159 H 28.8°. Best body text is #FFFFFF at 5.89:1 contrast (WCAG AA passes).

Color values

HEX	#B33A2F
RGB	rgb(179, 58, 47)
HSL	hsl(5, 58%, 44%)
HSV	hsv(5, 74%, 70%)
CMYK	cmyk(0%, 67.6%, 73.7%, 29.8%)
CIE-LAB	lab(42.49, 48.33, 33.93)
CIE-LCH	lch(42.49, 59.05, 35.07°)
OKLab	oklab(52.27% 0.1391 0.0766)
OKLCH	oklch(52.27% 0.159 28.8)
XYZ	xyz(20.6188, 12.8181, 4.0772)
Luminance	0.1281 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33A2F #2FA8B3

analogous

#B32F66 #B33A2F #B37C2F

triadic

#B33A2F #2FB33A #3A2FB3

tetradic

#B33A2F #66B32F #2FA8B3 #7C2FB3

square

#B33A2F #66B32F #2FA8B3 #7C2FB3

split-complementary

#B33A2F #2FB37C #2F66B3

monochromatic

#521B16 #832A22 #B33A2F #D1594F #DD877F

Accessibility & contrast

On white

5.89

#B33A2F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B33A2F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33A2F

5.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33A2F	#FFFFFF	#000000	##FFFFFF
##B33A2F	1.00	5.89	3.56	5.89
#FFFFFF	5.89	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C542D

Deuteranopia (green-blind)

#7A6E2B

Tritanopia (blue-blind)

#C51638

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b33a2f;
/* rgb */ color: rgb(179, 58, 47);
/* oklch */ color: oklch(52.3% 0.159 28.8);

Tailwind

colors: {
  custom: {
    50: '#d27768',
    500: '#b33a2f',
    950: '#000000',
  },
}

SCSS

$custom: #b33a2f;
$custom-light: #d27768;
$custom-dark: #000000;

JSON

{
  "hex": "#b33a2f",
  "rgb": {
    "r": 179,
    "g": 58,
    "b": 47
  },
  "hsl": {
    "h": 5,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.52272,
    "c": 0.15877,
    "h": 28.8
  },
  "luminance": 0.12815
}

Semantic roles & 50–950 ramp

primary

#B33A2F

secondary

#78C0C6

accent

#D5E246

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33A2F

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

Preview Lab → · Contrast checker → · Palette generator →