#BB331F#BB331F

#BB331F is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.7% C 0.176 H 31.4°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#BB331F
RGB	rgb(187, 51, 31)
HSL	hsl(8, 72%, 43%)
HSV	hsv(8, 83%, 73%)
CMYK	cmyk(0%, 72.7%, 83.4%, 26.7%)
CIE-LAB	lab(42.82, 53.14, 43.39)
CIE-LCH	lch(42.82, 68.61, 39.23°)
OKLab	oklab(52.74% 0.1501 0.0918)
OKLCH	oklch(52.74% 0.176 31.4)
XYZ	xyz(21.9273, 13.0348, 2.6575)
Luminance	0.1303 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB331F #1FA7BB

analogous

#BB1F59 #BB331F #BB811F

triadic

#BB331F #1FBB33 #331FBB

tetradic

#BB331F #59BB1F #1FA7BB #811FBB

square

#BB331F #59BB1F #1FA7BB #811FBB

split-complementary

#BB331F #1FBB81 #1F59BB

monochromatic

#52160E #872516 #BB331F #DE4E39 #E77D6E

Accessibility & contrast

On white

5.82

#BB331F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#BB331F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB331F

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB331F	#FFFFFF	#000000	##FFFFFF
##BB331F	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C521B

Deuteranopia (green-blind)

#7E7017

Tritanopia (blue-blind)

#CE0030

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #bb331f;
/* rgb */ color: rgb(187, 51, 31);
/* oklch */ color: oklch(52.7% 0.176 31.4);

Tailwind

colors: {
  custom: {
    50: '#d9745d',
    500: '#bb331f',
    950: '#000000',
  },
}

SCSS

$custom: #bb331f;
$custom-light: #d9745d;
$custom-dark: #000000;

JSON

{
  "hex": "#bb331f",
  "rgb": {
    "r": 187,
    "g": 51,
    "b": 31
  },
  "hsl": {
    "h": 7.692,
    "s": 71.56,
    "l": 42.745
  },
  "oklch": {
    "l": 0.52739,
    "c": 0.17595,
    "h": 31.4
  },
  "luminance": 0.13031
}

Semantic roles & 50–950 ramp

primary

#BB331F

secondary

#69C0CD

accent

#D7EE3A

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#170904

muted

#857B79

Preview Lab

Preview with #BB331F

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

Preview Lab → · Contrast checker → · Palette generator →