#B33D3D#B33D3D

#B33D3D is a mid, vivid red. Relative luminance 0.133; OKLCH L 52.8% C 0.154 H 24.0°. Best body text is #FFFFFF at 5.75:1 contrast (WCAG AA passes).

Color values

HEX	#B33D3D
RGB	rgb(179, 61, 61)
HSL	hsl(0, 49%, 47%)
HSV	hsv(0, 66%, 70%)
CMYK	cmyk(0%, 65.9%, 65.9%, 29.8%)
CIE-LAB	lab(43.15, 47.79, 26.47)
CIE-LCH	lch(43.15, 54.63, 28.98°)
OKLab	oklab(52.84% 0.1403 0.0625)
OKLCH	oklch(52.84% 0.154 24)
XYZ	xyz(21.1036, 13.2611, 5.8624)
Luminance	0.1326 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33D3D #3DB3B3

analogous

#B33D78 #B33D3D #B3783D

triadic

#B33D3D #3DB33D #3D3DB3

tetradic

#B33D3D #78B33D #3DB3B3 #783DB3

square

#B33D3D #78B33D #3DB3B3 #783DB3

split-complementary

#B33D3D #3DB378 #3D78B3

monochromatic

#581E1E #852D2D #B33D3D #CA6363 #D99191

Accessibility & contrast

On white

5.75

#B33D3D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.65

#B33D3D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33D3D

5.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33D3D	#FFFFFF	#000000	##FFFFFF
##B33D3D	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)

#5C563C

Deuteranopia (green-blind)

#7A6F3A

Tritanopia (blue-blind)

#C4213E

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #b33d3d;
/* rgb */ color: rgb(179, 61, 61);
/* oklch */ color: oklch(52.8% 0.154 24.0);

Tailwind

colors: {
  custom: {
    50: '#d17972',
    500: '#b33d3d',
    950: '#000000',
  },
}

SCSS

$custom: #b33d3d;
$custom-light: #d17972;
$custom-dark: #000000;

JSON

{
  "hex": "#b33d3d",
  "rgb": {
    "r": 179,
    "g": 61,
    "b": 61
  },
  "hsl": {
    "h": 0,
    "s": 49.167,
    "l": 47.059
  },
  "oklch": {
    "l": 0.52835,
    "c": 0.1536,
    "h": 24
  },
  "luminance": 0.13258
}

Semantic roles & 50–950 ramp

primary

#B33D3D

secondary

#87C5C5

accent

#D9D94F

background

#FDF7F6

surface

#FBEEEC

border

#D4C9C7

text

#150908

muted

#837B7B

Preview Lab

Preview with #B33D3D

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

Preview Lab → · Contrast checker → · Palette generator →