#BB3131#BB3131

#BB3131 is a mid, vivid red. Relative luminance 0.130; OKLCH L 52.7% C 0.175 H 25.5°. Best body text is #FFFFFF at 5.84:1 contrast (WCAG AA passes).

Color values

HEX	#BB3131
RGB	rgb(187, 49, 49)
HSL	hsl(0, 58%, 46%)
HSV	hsv(0, 74%, 73%)
CMYK	cmyk(0%, 73.8%, 73.8%, 26.7%)
CIE-LAB	lab(42.74, 54.48, 33.46)
CIE-LCH	lch(42.74, 63.94, 31.56°)
OKLab	oklab(52.74% 0.1579 0.0755)
OKLCH	oklch(52.74% 0.175 25.5)
XYZ	xyz(22.1487, 12.9866, 4.2456)
Luminance	0.1298 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#BB3131 #31BBBB

analogous

#BB3176 #BB3131 #BB7631

triadic

#BB3131 #31BB31 #3131BB

tetradic

#BB3131 #76BB31 #31BBBB #7631BB

square

#BB3131 #76BB31 #31BBBB #7631BB

split-complementary

#BB3131 #31BB76 #3176BB

monochromatic

#5A1818 #8B2424 #BB3131 #D35656 #E08787

Accessibility & contrast

On white

5.84

#BB3131 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.60

#BB3131 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #BB3131

5.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##BB3131	#FFFFFF	#000000	##FFFFFF
##BB3131	1.00	5.84	3.60	5.84
#FFFFFF	5.84	1.00	21.00	1.00
#000000	3.60	21.00	1.00	21.00
##FFFFFF	5.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A522F

Deuteranopia (green-blind)

#7C702C

Tritanopia (blue-blind)

#CE0033

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #bb3131;
/* rgb */ color: rgb(187, 49, 49);
/* oklch */ color: oklch(52.7% 0.175 25.5);

Tailwind

colors: {
  custom: {
    50: '#d87469',
    500: '#bb3131',
    950: '#000000',
  },
}

SCSS

$custom: #bb3131;
$custom-light: #d87469;
$custom-dark: #000000;

JSON

{
  "hex": "#bb3131",
  "rgb": {
    "r": 187,
    "g": 49,
    "b": 49
  },
  "hsl": {
    "h": 0,
    "s": 58.475,
    "l": 46.275
  },
  "oklch": {
    "l": 0.52743,
    "c": 0.17506,
    "h": 25.5
  },
  "luminance": 0.12983
}

Semantic roles & 50–950 ramp

primary

#BB3131

secondary

#7FC9C9

accent

#E2E246

background

#FEF7F6

surface

#FDEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #BB3131

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

Preview Lab → · Contrast checker → · Palette generator →