#B13331#B13331

#B13331 is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.2% C 0.163 H 25.8°. Best body text is #FFFFFF at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#B13331
RGB	rgb(177, 51, 49)
HSL	hsl(1, 57%, 44%)
HSV	hsv(1, 72%, 69%)
CMYK	cmyk(0%, 71.2%, 72.3%, 30.6%)
CIE-LAB	lab(41.12, 50.55, 31.10)
CIE-LCH	lch(41.12, 59.36, 31.60°)
OKLab	oklab(51.19% 0.1468 0.0709)
OKLCH	oklch(51.19% 0.163 25.8)
XYZ	xyz(19.8719, 11.9395, 4.1633)
Luminance	0.1194 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B13331 #31AFB1

analogous

#B1316F #B13331 #B17331

triadic

#B13331 #31B133 #3331B1

tetradic

#B13331 #6FB131 #31AFB1 #7331B1

square

#B13331 #6FB131 #31AFB1 #7331B1

split-complementary

#B13331 #31B173 #316FB1

monochromatic

#511716 #812524 #B13331 #CF5251 #DC8280

Accessibility & contrast

On white

6.20

#B13331 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#B13331 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B13331

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B13331	#FFFFFF	#000000	##FFFFFF
##B13331	1.00	6.20	3.39	6.20
#FFFFFF	6.20	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#575030

Deuteranopia (green-blind)

#776B2D

Tritanopia (blue-blind)

#C30334

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b13331;
/* rgb */ color: rgb(177, 51, 49);
/* oklch */ color: oklch(51.2% 0.163 25.8);

Tailwind

colors: {
  custom: {
    50: '#d07369',
    500: '#b13331',
    950: '#000000',
  },
}

SCSS

$custom: #b13331;
$custom-light: #d07369;
$custom-dark: #000000;

JSON

{
  "hex": "#b13331",
  "rgb": {
    "r": 177,
    "g": 51,
    "b": 49
  },
  "hsl": {
    "h": 0.938,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51189,
    "c": 0.163,
    "h": 25.8
  },
  "luminance": 0.11937
}

Semantic roles & 50–950 ramp

primary

#B13331

secondary

#79C4C5

accent

#DEE048

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150906

muted

#837B7A

Preview Lab

Preview with #B13331

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

Preview Lab → · Contrast checker → · Palette generator →