#B33A2A#B33A2A

#B33A2A is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.2% C 0.160 H 30.6°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#B33A2A
RGB	rgb(179, 58, 42)
HSL	hsl(7, 62%, 43%)
HSV	hsv(7, 77%, 70%)
CMYK	cmyk(0%, 67.6%, 76.5%, 29.8%)
CIE-LAB	lab(42.43, 48.12, 36.69)
CIE-LCH	lch(42.43, 60.51, 37.33°)
OKLab	oklab(52.21% 0.1374 0.0813)
OKLCH	oklch(52.21% 0.16 30.6)
XYZ	xyz(20.5237, 12.7800, 3.5761)
Luminance	0.1278 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33A2A #2AA3B3

analogous

#B32A5E #B33A2A #B37E2A

triadic

#B33A2A #2AB33A #3A2AB3

tetradic

#B33A2A #5EB32A #2AA3B3 #7E2AB3

square

#B33A2A #5EB32A #2AA3B3 #7E2AB3

split-complementary

#B33A2A #2AB37E #2A5EB3

monochromatic

#501A13 #812A1E #B33A2A #D45746 #DF8478

Accessibility & contrast

On white

5.91

#B33A2A on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.56

#B33A2A on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33A2A

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33A2A	#FFFFFF	#000000	##FFFFFF
##B33A2A	1.00	5.91	3.56	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.56	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5327

Deuteranopia (green-blind)

#7B6E25

Tritanopia (blue-blind)

#C51537

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #b33a2a;
/* rgb */ color: rgb(179, 58, 42);
/* oklch */ color: oklch(52.2% 0.160 30.6);

Tailwind

colors: {
  custom: {
    50: '#d27765',
    500: '#b33a2a',
    950: '#000000',
  },
}

SCSS

$custom: #b33a2a;
$custom-light: #d27765;
$custom-dark: #000000;

JSON

{
  "hex": "#b33a2a",
  "rgb": {
    "r": 179,
    "g": 58,
    "b": 42
  },
  "hsl": {
    "h": 7.007,
    "s": 61.991,
    "l": 43.333
  },
  "oklch": {
    "l": 0.5221,
    "c": 0.15968,
    "h": 30.6
  },
  "luminance": 0.12777
}

Semantic roles & 50–950 ramp

primary

#B33A2A

secondary

#72BDC7

accent

#D2E543

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160905

muted

#847B7A

Preview Lab

Preview with #B33A2A

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

Preview Lab → · Contrast checker → · Palette generator →