#B33D2B#B33D2B

#B33D2B is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.6% C 0.157 H 31.4°. Best body text is #FFFFFF at 5.80:1 contrast (WCAG AA passes).

Color values

HEX	#B33D2B
RGB	rgb(179, 61, 43)
HSL	hsl(8, 61%, 44%)
HSV	hsv(8, 76%, 70%)
CMYK	cmyk(0%, 65.9%, 76%, 29.8%)
CIE-LAB	lab(42.91, 46.88, 36.65)
CIE-LCH	lch(42.91, 59.51, 38.02°)
OKLab	oklab(52.58% 0.1338 0.0815)
OKLCH	oklch(52.58% 0.157 31.4)
XYZ	xyz(20.6975, 13.0986, 3.7235)
Luminance	0.1310 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33D2B #2BA1B3

analogous

#B32B5D #B33D2B #B3812B

triadic

#B33D2B #2BB33D #3D2BB3

tetradic

#B33D2B #5DB32B #2BA1B3 #812BB3

square

#B33D2B #5DB32B #2BA1B3 #812BB3

split-complementary

#B33D2B #2BB381 #2B5DB3

monochromatic

#501B13 #822C1F #B33D2B #D35B48 #DF8779

Accessibility & contrast

On white

5.80

#B33D2B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#B33D2B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33D2B

5.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33D2B	#FFFFFF	#000000	##FFFFFF
##B33D2B	1.00	5.80	3.62	5.80
#FFFFFF	5.80	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E5528

Deuteranopia (green-blind)

#7C6F27

Tritanopia (blue-blind)

#C51C3A

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33d2b;
/* rgb */ color: rgb(179, 61, 43);
/* oklch */ color: oklch(52.6% 0.157 31.4);

Tailwind

colors: {
  custom: {
    50: '#d27965',
    500: '#b33d2b',
    950: '#000000',
  },
}

SCSS

$custom: #b33d2b;
$custom-light: #d27965;
$custom-dark: #000000;

JSON

{
  "hex": "#b33d2b",
  "rgb": {
    "r": 179,
    "g": 61,
    "b": 43
  },
  "hsl": {
    "h": 7.941,
    "s": 61.261,
    "l": 43.529
  },
  "oklch": {
    "l": 0.52575,
    "c": 0.15665,
    "h": 31.4
  },
  "luminance": 0.13096
}

Semantic roles & 50–950 ramp

primary

#B33D2B

secondary

#73BCC7

accent

#CFE443

background

#FEF7F6

surface

#FCEEEB

border

#D5C9C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B33D2B

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

Preview Lab → · Contrast checker → · Palette generator →