#BB3821#BB3821

#BB3821 is a mid, vivid red. Relative luminance 0.135; OKLCH L 53.3% C 0.171 H 32.4°. Best body text is #FFFFFF at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#BB3821
RGB	rgb(187, 56, 33)
HSL	hsl(9, 70%, 43%)
HSV	hsv(9, 82%, 73%)
CMYK	cmyk(0%, 70.1%, 82.4%, 26.7%)
CIE-LAB	lab(43.52, 51.32, 43.04)
CIE-LCH	lch(43.52, 66.98, 39.99°)
OKLab	oklab(53.27% 0.1448 0.0917)
OKLCH	oklch(53.27% 0.171 32.4)
XYZ	xyz(22.1848, 13.5063, 2.8774)
Luminance	0.1350 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3821 #21A4BB

analogous

#BB2157 #BB3821 #BB8521

triadic

#BB3821 #21BB38 #3821BB

tetradic

#BB3821 #57BB21 #21A4BB #8521BB

square

#BB3821 #57BB21 #21A4BB #8521BB

split-complementary

#BB3821 #21BB85 #2157BB

monochromatic

#53190F #872818 #BB3821 #DD543D #E68271

Accessibility & contrast

On white

5.67

#BB3821 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.70

#BB3821 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3821

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3821	#FFFFFF	#000000	##FFFFFF
##BB3821	1.00	5.67	3.70	5.67
#FFFFFF	5.67	1.00	21.00	1.00
#000000	3.70	21.00	1.00	21.00
##FFFFFF	5.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F541D

Deuteranopia (green-blind)

#7F711A

Tritanopia (blue-blind)

#CE0034

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #bb3821;
/* rgb */ color: rgb(187, 56, 33);
/* oklch */ color: oklch(53.3% 0.171 32.4);

Tailwind

colors: {
  custom: {
    50: '#d9775f',
    500: '#bb3821',
    950: '#000000',
  },
}

SCSS

$custom: #bb3821;
$custom-light: #d9775f;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3821",
  "rgb": {
    "r": 187,
    "g": 56,
    "b": 33
  },
  "hsl": {
    "h": 8.961,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.53268,
    "c": 0.17142,
    "h": 32.4
  },
  "luminance": 0.13503
}

Semantic roles & 50–950 ramp

primary

#BB3821

secondary

#6BBECC

accent

#D2ED3B

background

#FEF7F5

surface

#FDEEE9

border

#D5C9C5

text

#170904

muted

#857B79

Preview Lab

Preview with #BB3821

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

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