#BB3628#BB3628

#BB3628 is a mid, vivid red. Relative luminance 0.134; OKLCH L 53.1% C 0.172 H 29.8°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#BB3628
RGB	rgb(187, 54, 40)
HSL	hsl(6, 65%, 45%)
HSV	hsv(6, 79%, 73%)
CMYK	cmyk(0%, 71.1%, 78.6%, 26.7%)
CIE-LAB	lab(43.30, 52.31, 39.16)
CIE-LCH	lch(43.30, 65.34, 36.82°)
OKLab	oklab(53.13% 0.1492 0.0855)
OKLCH	oklch(53.13% 0.172 29.8)
XYZ	xyz(22.1983, 13.3597, 3.4169)
Luminance	0.1336 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3628 #28ADBB

analogous

#BB2864 #BB3628 #BB7F28

triadic

#BB3628 #28BB36 #3628BB

tetradic

#BB3628 #64BB28 #28ADBB #7F28BB

square

#BB3628 #64BB28 #28ADBB #7F28BB

split-complementary

#BB3628 #28BB7F #2864BB

monochromatic

#561912 #89271D #BB3628 #D85648 #E3857B

Accessibility & contrast

On white

5.72

#BB3628 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#BB3628 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3628

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3628	#FFFFFF	#000000	##FFFFFF
##BB3628	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D5425

Deuteranopia (green-blind)

#7E7122

Tritanopia (blue-blind)

#CE0034

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #bb3628;
/* rgb */ color: rgb(187, 54, 40);
/* oklch */ color: oklch(53.1% 0.172 29.8);

Tailwind

colors: {
  custom: {
    50: '#d87663',
    500: '#bb3628',
    950: '#000000',
  },
}

SCSS

$custom: #bb3628;
$custom-light: #d87663;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3628",
  "rgb": {
    "r": 187,
    "g": 54,
    "b": 40
  },
  "hsl": {
    "h": 5.714,
    "s": 64.758,
    "l": 44.51
  },
  "oklch": {
    "l": 0.53127,
    "c": 0.17201,
    "h": 29.8
  },
  "luminance": 0.13356
}

Semantic roles & 50–950 ramp

primary

#BB3628

secondary

#74C2CB

accent

#D8E840

background

#FEF7F5

surface

#FDEDEA

border

#D5C8C6

text

#160905

muted

#847B79

Preview Lab

Preview with #BB3628

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

Preview Lab → · Contrast checker → · Palette generator →