#BB4637#BB4637

#BB4637 is a mid, vivid red. Relative luminance 0.152; OKLCH L 55.2% C 0.154 H 30.0°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#BB4637
RGB	rgb(187, 70, 55)
HSL	hsl(7, 55%, 47%)
HSV	hsv(7, 71%, 73%)
CMYK	cmyk(0%, 62.6%, 70.6%, 26.7%)
CIE-LAB	lab(45.94, 46.28, 33.67)
CIE-LCH	lch(45.94, 57.24, 36.04°)
OKLab	oklab(55.16% 0.1334 0.0772)
OKLCH	oklch(55.16% 0.154 30)
XYZ	xyz(23.3757, 15.2242, 5.3213)
Luminance	0.1522 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB4637 #37ACBB

analogous

#BB376A #BB4637 #BB8837

triadic

#BB4637 #37BB46 #4637BB

tetradic

#BB4637 #6ABB37 #37ACBB #8837BB

square

#BB4637 #6ABB37 #37ACBB #8837BB

split-complementary

#BB4637 #37BB88 #376ABB

monochromatic

#5C231B #8C3429 #BB4637 #D06C5F #DE988E

Accessibility & contrast

On white

5.19

#BB4637 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.04

#BB4637 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB4637

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB4637	#FFFFFF	#000000	##FFFFFF
##BB4637	1.00	5.19	4.04	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.04	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#665D35

Deuteranopia (green-blind)

#837634

Tritanopia (blue-blind)

#CD2B43

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #bb4637;
/* rgb */ color: rgb(187, 70, 55);
/* oklch */ color: oklch(55.2% 0.154 30.0);

Tailwind

colors: {
  custom: {
    50: '#d77f6e',
    500: '#bb4637',
    950: '#000000',
  },
}

SCSS

$custom: #bb4637;
$custom-light: #d77f6e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb4637",
  "rgb": {
    "r": 187,
    "g": 70,
    "b": 55
  },
  "hsl": {
    "h": 6.818,
    "s": 54.545,
    "l": 47.451
  },
  "oklch": {
    "l": 0.55163,
    "c": 0.15411,
    "h": 30
  },
  "luminance": 0.15221
}

Semantic roles & 50–950 ramp

primary

#BB4637

secondary

#85C1C9

accent

#CDDE4A

background

#FEF7F6

surface

#FCEEEC

border

#D5C9C7

text

#160A07

muted

#847C7A

Preview Lab

Preview with #BB4637

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

Preview Lab → · Contrast checker → · Palette generator →