#BB311E#BB311E

#BB311E is a mid, vivid red. Relative luminance 0.129; OKLCH L 52.5% C 0.178 H 31.2°. Best body text is #FFFFFF at 5.88:1 contrast (WCAG AA passes).

Color values

HEX	#BB311E
RGB	rgb(187, 49, 30)
HSL	hsl(7, 72%, 43%)
HSV	hsv(7, 84%, 73%)
CMYK	cmyk(0%, 73.8%, 84%, 26.7%)
CIE-LAB	lab(42.55, 53.83, 43.65)
CIE-LCH	lch(42.55, 69.30, 39.04°)
OKLab	oklab(52.54% 0.1521 0.0919)
OKLCH	oklch(52.54% 0.178 31.2)
XYZ	xyz(21.8288, 12.8586, 2.5606)
Luminance	0.1285 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB311E #1EA8BB

analogous

#BB1E5A #BB311E #BB7F1E

triadic

#BB311E #1EBB31 #311EBB

tetradic

#BB311E #5ABB1E #1EA8BB #7F1EBB

square

#BB311E #5ABB1E #1EA8BB #7F1EBB

split-complementary

#BB311E #1EBB7F #1E5ABB

monochromatic

#52150D #862316 #BB311E #DF4C37 #E77B6C

Accessibility & contrast

On white

5.88

#BB311E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.57

#BB311E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB311E

5.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB311E	#FFFFFF	#000000	##FFFFFF
##BB311E	1.00	5.88	3.57	5.88
#FFFFFF	5.88	1.00	21.00	1.00
#000000	3.57	21.00	1.00	21.00
##FFFFFF	5.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B511A

Deuteranopia (green-blind)

#7D6F16

Tritanopia (blue-blind)

#CE002E

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #bb311e;
/* rgb */ color: rgb(187, 49, 30);
/* oklch */ color: oklch(52.5% 0.178 31.2);

Tailwind

colors: {
  custom: {
    50: '#d9735c',
    500: '#bb311e',
    950: '#000000',
  },
}

SCSS

$custom: #bb311e;
$custom-light: #d9735c;
$custom-dark: #000000;

JSON

{
  "hex": "#bb311e",
  "rgb": {
    "r": 187,
    "g": 49,
    "b": 30
  },
  "hsl": {
    "h": 7.261,
    "s": 72.35,
    "l": 42.549
  },
  "oklch": {
    "l": 0.52537,
    "c": 0.17772,
    "h": 31.2
  },
  "luminance": 0.12855
}

Semantic roles & 50–950 ramp

primary

#BB311E

secondary

#67C1CD

accent

#D9EF39

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#170904

muted

#857B79

Preview Lab

Preview with #BB311E

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

Preview Lab → · Contrast checker → · Palette generator →