#BB3421#BB3421

#BB3421 is a mid, vivid red. Relative luminance 0.131; OKLCH L 52.9% C 0.175 H 31.2°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#BB3421
RGB	rgb(187, 52, 33)
HSL	hsl(7, 70%, 43%)
HSV	hsv(7, 82%, 73%)
CMYK	cmyk(0%, 72.2%, 82.4%, 26.7%)
CIE-LAB	lab(42.96, 52.83, 42.52)
CIE-LCH	lch(42.96, 67.82, 38.83°)
OKLab	oklab(52.86% 0.1495 0.0906)
OKLCH	oklch(52.86% 0.175 31.2)
XYZ	xyz(21.9986, 13.1340, 2.8153)
Luminance	0.1313 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3421 #21A8BB

analogous

#BB215B #BB3421 #BB8121

triadic

#BB3421 #21BB34 #3421BB

tetradic

#BB3421 #5BBB21 #21A8BB #8121BB

square

#BB3421 #5BBB21 #21A8BB #8121BB

split-complementary

#BB3421 #21BB81 #215BBB

monochromatic

#53170F #872618 #BB3421 #DD503D #E67F71

Accessibility & contrast

On white

5.79

#BB3421 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#BB3421 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3421

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3421	#FFFFFF	#000000	##FFFFFF
##BB3421	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D521D

Deuteranopia (green-blind)

#7E701A

Tritanopia (blue-blind)

#CE0031

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #bb3421;
/* rgb */ color: rgb(187, 52, 33);
/* oklch */ color: oklch(52.9% 0.175 31.2);

Tailwind

colors: {
  custom: {
    50: '#d9755e',
    500: '#bb3421',
    950: '#000000',
  },
}

SCSS

$custom: #bb3421;
$custom-light: #d9755e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3421",
  "rgb": {
    "r": 187,
    "g": 52,
    "b": 33
  },
  "hsl": {
    "h": 7.403,
    "s": 70,
    "l": 43.137
  },
  "oklch": {
    "l": 0.52855,
    "c": 0.17483,
    "h": 31.2
  },
  "luminance": 0.13131
}

Semantic roles & 50–950 ramp

primary

#BB3421

secondary

#6BC0CC

accent

#D7ED3B

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#170904

muted

#857B79

Preview Lab

Preview with #BB3421

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

Preview Lab → · Contrast checker → · Palette generator →