#BB331D#BB331D

#BB331D is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.7% C 0.176 H 31.9°. Best body text is #FFFFFF at 5.83:1 contrast (WCAG AA passes).

Color values

HEX	#BB331D
RGB	rgb(187, 51, 29)
HSL	hsl(8, 73%, 42%)
HSV	hsv(8, 84%, 73%)
CMYK	cmyk(0%, 72.7%, 84.5%, 26.7%)
CIE-LAB	lab(42.80, 53.09, 44.36)
CIE-LCH	lch(42.80, 69.18, 39.88°)
OKLab	oklab(52.72% 0.1496 0.0932)
OKLCH	oklch(52.72% 0.176 31.9)
XYZ	xyz(21.9018, 13.0246, 2.5229)
Luminance	0.1302 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB331D #1DA5BB

analogous

#BB1D56 #BB331D #BB821D

triadic

#BB331D #1DBB33 #331DBB

tetradic

#BB331D #56BB1D #1DA5BB #821DBB

square

#BB331D #56BB1D #1DA5BB #821DBB

split-complementary

#BB331D #1DBB82 #1D56BB

monochromatic

#51160D #862515 #BB331D #E04D35 #E87C6A

Accessibility & contrast

On white

5.83

#BB331D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#BB331D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB331D

5.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB331D	#FFFFFF	#000000	##FFFFFF
##BB331D	1.00	5.83	3.60	5.83
#FFFFFF	5.83	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C5218

Deuteranopia (green-blind)

#7E7015

Tritanopia (blue-blind)

#CE002F

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #bb331d;
/* rgb */ color: rgb(187, 51, 29);
/* oklch */ color: oklch(52.7% 0.176 31.9);

Tailwind

colors: {
  custom: {
    50: '#d9745c',
    500: '#bb331d',
    950: '#000000',
  },
}

SCSS

$custom: #bb331d;
$custom-light: #d9745c;
$custom-dark: #000000;

JSON

{
  "hex": "#bb331d",
  "rgb": {
    "r": 187,
    "g": 51,
    "b": 29
  },
  "hsl": {
    "h": 8.354,
    "s": 73.148,
    "l": 42.353
  },
  "oklch": {
    "l": 0.52722,
    "c": 0.17625,
    "h": 31.9
  },
  "luminance": 0.13021
}

Semantic roles & 50–950 ramp

primary

#BB331D

secondary

#66BFCE

accent

#D6F038

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#170904

muted

#857B79

Preview Lab

Preview with #BB331D

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

Preview Lab → · Contrast checker → · Palette generator →