#BB3138#BB3138

#BB3138 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.8% C 0.174 H 23.0°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#BB3138
RGB	rgb(187, 49, 56)
HSL	hsl(357, 58%, 46%)
HSV	hsv(357, 74%, 73%)
CMYK	cmyk(0%, 73.8%, 70.1%, 26.7%)
CIE-LAB	lab(42.84, 54.81, 29.42)
CIE-LCH	lch(42.84, 62.20, 28.23°)
OKLab	oklab(52.85% 0.1605 0.068)
OKLCH	oklch(52.85% 0.174 23)
XYZ	xyz(22.3081, 13.0503, 5.0849)
Luminance	0.1305 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3138 #31BBB4

analogous

#BB317D #BB3138 #BB6F31

triadic

#BB3138 #38BB31 #3138BB

tetradic

#BB3138 #7DBB31 #31BBB4 #6F31BB

square

#BB3138 #7DBB31 #31BBB4 #6F31BB

split-complementary

#BB3138 #31BB6F #317DBB

monochromatic

#5A181B #8B2429 #BB3138 #D3565D #E0878B

Accessibility & contrast

On white

5.82

#BB3138 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#BB3138 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3138

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3138	#FFFFFF	#000000	##FFFFFF
##BB3138	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#595237

Deuteranopia (green-blind)

#7C7034

Tritanopia (blue-blind)

#CE0035

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #bb3138;
/* rgb */ color: rgb(187, 49, 56);
/* oklch */ color: oklch(52.8% 0.174 23.0);

Tailwind

colors: {
  custom: {
    50: '#d8746e',
    500: '#bb3138',
    950: '#000000',
  },
}

SCSS

$custom: #bb3138;
$custom-light: #d8746e;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3138",
  "rgb": {
    "r": 187,
    "g": 49,
    "b": 56
  },
  "hsl": {
    "h": 356.957,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52845,
    "c": 0.17429,
    "h": 23
  },
  "luminance": 0.13047
}

Semantic roles & 50–950 ramp

primary

#BB3138

secondary

#7FC9C5

accent

#E2DA46

background

#FEF7F6

surface

#FCEDEC

border

#D5C8C7

text

#160907

muted

#847B7A

Preview Lab

Preview with #BB3138

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

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