#B33D3C#B33D3C

#B33D3C is a mid, vivid red. Relative luminance 0.132; OKLCH L 52.8% C 0.154 H 24.5°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B33D3C
RGB	rgb(179, 61, 60)
HSL	hsl(1, 50%, 47%)
HSV	hsv(1, 66%, 70%)
CMYK	cmyk(0%, 65.9%, 66.5%, 29.8%)
CIE-LAB	lab(43.14, 47.73, 27.05)
CIE-LCH	lch(43.14, 54.87, 29.54°)
OKLab	oklab(52.82% 0.1399 0.0637)
OKLCH	oklch(52.82% 0.154 24.5)
XYZ	xyz(21.0769, 13.2504, 5.7218)
Luminance	0.1325 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33D3C #3CB2B3

analogous

#B33C77 #B33D3C #B3793C

triadic

#B33D3C #3CB33D #3D3CB3

tetradic

#B33D3C #77B33C #3CB2B3 #793CB3

square

#B33D3C #77B33C #3CB2B3 #793CB3

split-complementary

#B33D3C #3CB379 #3C77B3

monochromatic

#571E1D #852D2D #B33D3C #CA6362 #DA9090

Accessibility & contrast

On white

5.75

#B33D3C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B33D3C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33D3C

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33D3C	#FFFFFF	#000000	##FFFFFF
##B33D3C	1.00	5.75	3.65	5.75
#FFFFFF	5.75	1.00	21.00	1.00
#000000	3.65	21.00	1.00	21.00
##FFFFFF	5.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D563B

Deuteranopia (green-blind)

#7A6F39

Tritanopia (blue-blind)

#C4203E

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33d3c;
/* rgb */ color: rgb(179, 61, 60);
/* oklch */ color: oklch(52.8% 0.154 24.5);

Tailwind

colors: {
  custom: {
    50: '#d17972',
    500: '#b33d3c',
    950: '#000000',
  },
}

SCSS

$custom: #b33d3c;
$custom-light: #d17972;
$custom-dark: #000000;

JSON

{
  "hex": "#b33d3c",
  "rgb": {
    "r": 179,
    "g": 61,
    "b": 60
  },
  "hsl": {
    "h": 0.504,
    "s": 49.791,
    "l": 46.863
  },
  "oklch": {
    "l": 0.52818,
    "c": 0.15372,
    "h": 24.5
  },
  "luminance": 0.13247
}

Semantic roles & 50–950 ramp

primary

#B33D3C

secondary

#86C4C5

accent

#D8D94E

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B33D3C

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

Preview Lab → · Contrast checker → · Palette generator →