#B33F3C#B33F3C

#B33F3C is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.1% C 0.152 H 25.2°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#B33F3C
RGB	rgb(179, 63, 60)
HSL	hsl(2, 50%, 47%)
HSV	hsv(2, 66%, 70%)
CMYK	cmyk(0%, 64.8%, 66.5%, 29.8%)
CIE-LAB	lab(43.46, 46.87, 27.45)
CIE-LCH	lch(43.46, 54.31, 30.35°)
OKLab	oklab(53.06% 0.1372 0.0646)
OKLCH	oklch(53.06% 0.152 25.2)
XYZ	xyz(21.1857, 13.4679, 5.7581)
Luminance	0.1346 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33F3C #3CB0B3

analogous

#B33C74 #B33F3C #B37B3C

triadic

#B33F3C #3CB33F #3F3CB3

tetradic

#B33F3C #74B33C #3CB0B3 #7B3CB3

square

#B33F3C #74B33C #3CB0B3 #7B3CB3

split-complementary

#B33F3C #3CB37B #3C74B3

monochromatic

#571F1D #852F2D #B33F3C #CA6562 #DA9290

Accessibility & contrast

On white

5.69

#B33F3C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#B33F3C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33F3C

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33F3C	#FFFFFF	#000000	##FFFFFF
##B33F3C	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E573B

Deuteranopia (green-blind)

#7B7039

Tritanopia (blue-blind)

#C4243F

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #b33f3c;
/* rgb */ color: rgb(179, 63, 60);
/* oklch */ color: oklch(53.1% 0.152 25.2);

Tailwind

colors: {
  custom: {
    50: '#d17a72',
    500: '#b33f3c',
    950: '#000000',
  },
}

SCSS

$custom: #b33f3c;
$custom-light: #d17a72;
$custom-dark: #000000;

JSON

{
  "hex": "#b33f3c",
  "rgb": {
    "r": 179,
    "g": 63,
    "b": 60
  },
  "hsl": {
    "h": 1.513,
    "s": 49.791,
    "l": 46.863
  },
  "oklch": {
    "l": 0.53059,
    "c": 0.15161,
    "h": 25.2
  },
  "luminance": 0.13465
}

Semantic roles & 50–950 ramp

primary

#B33F3C

secondary

#86C3C5

accent

#D6D94E

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150A08

muted

#837C7B

Preview Lab

Preview with #B33F3C

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

Preview Lab → · Contrast checker → · Palette generator →