#B33D31#B33D31

#B33D31 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.7% C 0.155 H 29.1°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#B33D31
RGB	rgb(179, 61, 49)
HSL	hsl(6, 57%, 45%)
HSV	hsv(6, 73%, 70%)
CMYK	cmyk(0%, 65.9%, 72.6%, 29.8%)
CIE-LAB	lab(42.98, 47.15, 33.34)
CIE-LCH	lch(42.98, 57.75, 35.26°)
OKLab	oklab(52.65% 0.1358 0.0757)
OKLCH	oklch(52.65% 0.155 29.1)
XYZ	xyz(20.8158, 13.1459, 4.3465)
Luminance	0.1314 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B33D31 #31A7B3

analogous

#B33166 #B33D31 #B37E31

triadic

#B33D31 #31B33D #3D31B3

tetradic

#B33D31 #66B331 #31A7B3 #7E31B3

square

#B33D31 #66B331 #31A7B3 #7E31B3

split-complementary

#B33D31 #31B37E #3166B3

monochromatic

#531C17 #832D24 #B33D31 #D05D52 #DD8A82

Accessibility & contrast

On white

5.79

#B33D31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#B33D31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B33D31

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B33D31	#FFFFFF	#000000	##FFFFFF
##B33D31	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E552F

Deuteranopia (green-blind)

#7B6F2D

Tritanopia (blue-blind)

#C51D3B

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #b33d31;
/* rgb */ color: rgb(179, 61, 49);
/* oklch */ color: oklch(52.7% 0.155 29.1);

Tailwind

colors: {
  custom: {
    50: '#d1796a',
    500: '#b33d31',
    950: '#000000',
  },
}

SCSS

$custom: #b33d31;
$custom-light: #d1796a;
$custom-dark: #000000;

JSON

{
  "hex": "#b33d31",
  "rgb": {
    "r": 179,
    "g": 61,
    "b": 49
  },
  "hsl": {
    "h": 5.538,
    "s": 57.018,
    "l": 44.706
  },
  "oklch": {
    "l": 0.52651,
    "c": 0.15549,
    "h": 29.1
  },
  "luminance": 0.13143
}

Semantic roles & 50–950 ramp

primary

#B33D31

secondary

#7ABFC6

accent

#D2E048

background

#FDF7F6

surface

#FBEEEB

border

#D4C9C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B33D31

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

Preview Lab → · Contrast checker → · Palette generator →