#BB301B#BB301B

#BB301B is a mid, vivid red. Relative luminance 0.128; OKLCH L 52.4% C 0.179 H 31.6°. Best body text is #FFFFFF at 5.91:1 contrast (WCAG AA passes).

Color values

HEX	#BB301B
RGB	rgb(187, 48, 27)
HSL	hsl(8, 75%, 42%)
HSV	hsv(8, 86%, 73%)
CMYK	cmyk(0%, 74.3%, 85.6%, 26.7%)
CIE-LAB	lab(42.40, 54.10, 44.97)
CIE-LCH	lch(42.40, 70.35, 39.73°)
OKLab	oklab(52.42% 0.1524 0.0937)
OKLCH	oklch(52.42% 0.179 31.6)
XYZ	xyz(21.7510, 12.7613, 2.3546)
Luminance	0.1276 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB301B #1BA6BB

analogous

#BB1B56 #BB301B #BB801B

triadic

#BB301B #1BBB30 #301BBB

tetradic

#BB301B #56BB1B #1BA6BB #801BBB

square

#BB301B #56BB1B #1BA6BB #801BBB

split-complementary

#BB301B #1BBB80 #1B56BB

monochromatic

#50150C #862213 #BB301B #E14932 #E97867

Accessibility & contrast

On white

5.91

#BB301B on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.55

#BB301B on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB301B

5.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB301B	#FFFFFF	#000000	##FFFFFF
##BB301B	1.00	5.91	3.55	5.91
#FFFFFF	5.91	1.00	21.00	1.00
#000000	3.55	21.00	1.00	21.00
##FFFFFF	5.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B5016

Deuteranopia (green-blind)

#7D6F12

Tritanopia (blue-blind)

#CE002D

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #bb301b;
/* rgb */ color: rgb(187, 48, 27);
/* oklch */ color: oklch(52.4% 0.179 31.6);

Tailwind

colors: {
  custom: {
    50: '#d9735a',
    500: '#bb301b',
    950: '#000000',
  },
}

SCSS

$custom: #bb301b;
$custom-light: #d9735a;
$custom-dark: #000000;

JSON

{
  "hex": "#bb301b",
  "rgb": {
    "r": 187,
    "g": 48,
    "b": 27
  },
  "hsl": {
    "h": 7.875,
    "s": 74.766,
    "l": 41.961
  },
  "oklch": {
    "l": 0.5242,
    "c": 0.17893,
    "h": 31.6
  },
  "luminance": 0.12758
}

Semantic roles & 50–950 ramp

primary

#BB301B

secondary

#63C0CE

accent

#D9F136

background

#FEF7F5

surface

#FDEDE9

border

#D5C8C5

text

#170904

muted

#857B79

Preview Lab

Preview with #BB301B

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

Preview Lab → · Contrast checker → · Palette generator →