#B3331D#B3331D

#B3331D is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.168 H 32.2°. Best body text is #FFFFFF at 6.16:1 contrast (WCAG AA passes).

Color values

HEX	#B3331D
RGB	rgb(179, 51, 29)
HSL	hsl(9, 72%, 41%)
HSV	hsv(9, 84%, 70%)
CMYK	cmyk(0%, 71.5%, 83.8%, 29.8%)
CIE-LAB	lab(41.28, 50.47, 42.43)
CIE-LCH	lch(41.28, 65.94, 40.05°)
OKLab	oklab(51.31% 0.1423 0.0897)
OKLCH	oklch(51.31% 0.168 32.2)
XYZ	xyz(19.9984, 12.0432, 2.4337)
Luminance	0.1204 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3331D #1D9DB3

analogous

#B31D52 #B3331D #B37E1D

triadic

#B3331D #1DB333 #331DB3

tetradic

#B3331D #52B31D #1D9DB3 #7E1DB3

square

#B3331D #52B31D #1D9DB3 #7E1DB3

split-complementary

#B3331D #1DB37E #1D52B3

monochromatic

#4A150C #7E2414 #B3331D #DD4930 #E67764

Accessibility & contrast

On white

6.16

#B3331D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#B3331D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3331D

6.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3331D	#FFFFFF	#000000	##FFFFFF
##B3331D	1.00	6.16	3.41	6.16
#FFFFFF	6.16	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#594F19

Deuteranopia (green-blind)

#796C16

Tritanopia (blue-blind)

#C5002F

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b3331d;
/* rgb */ color: rgb(179, 51, 29);
/* oklch */ color: oklch(51.3% 0.168 32.2);

Tailwind

colors: {
  custom: {
    50: '#d3735c',
    500: '#b3331d',
    950: '#000000',
  },
}

SCSS

$custom: #b3331d;
$custom-light: #d3735c;
$custom-dark: #000000;

JSON

{
  "hex": "#b3331d",
  "rgb": {
    "r": 179,
    "g": 51,
    "b": 29
  },
  "hsl": {
    "h": 8.8,
    "s": 72.115,
    "l": 40.784
  },
  "oklch": {
    "l": 0.51313,
    "c": 0.1682,
    "h": 32.2
  },
  "luminance": 0.1204
}

Semantic roles & 50–950 ramp

primary

#B3331D

secondary

#61BBCB

accent

#D4EF39

background

#FEF7F5

surface

#FCEDE9

border

#D5C8C5

text

#160904

muted

#847B79

Preview Lab

Preview with #B3331D

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

Preview Lab → · Contrast checker → · Palette generator →