#B1313C#B1313C

#B1313C is a mid, vivid red. Relative luminance 0.119; OKLCH L 51.2% C 0.164 H 20.6°. Best body text is #FFFFFF at 6.22:1 contrast (WCAG AA passes).

Color values

HEX	#B1313C
RGB	rgb(177, 49, 60)
HSL	hsl(355, 57%, 44%)
HSV	hsv(355, 72%, 69%)
CMYK	cmyk(0%, 72.3%, 66.1%, 30.6%)
CIE-LAB	lab(41.01, 51.88, 24.32)
CIE-LCH	lch(41.01, 57.30, 25.12°)
OKLab	oklab(51.16% 0.1533 0.0576)
OKLCH	oklch(51.16% 0.164 20.6)
XYZ	xyz(20.0475, 11.8729, 5.5102)
Luminance	0.1187 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1313C #31B1A6

analogous

#B1317C #B1313C #B16631

triadic

#B1313C #3CB131 #313CB1

tetradic

#B1313C #7CB131 #31B1A6 #6631B1

square

#B1313C #7CB131 #31B1A6 #6631B1

split-complementary

#B1313C #31B166 #317CB1

monochromatic

#51161C #81242C #B1313C #CF515B #DC8088

Accessibility & contrast

On white

6.22

#B1313C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.37

#B1313C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1313C

6.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1313C	#FFFFFF	#000000	##FFFFFF
##B1313C	1.00	6.22	3.37	6.22
#FFFFFF	6.22	1.00	21.00	1.00
#000000	3.37	21.00	1.00	21.00
##FFFFFF	6.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#554F3B

Deuteranopia (green-blind)

#756B38

Tritanopia (blue-blind)

#C20336

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b1313c;
/* rgb */ color: rgb(177, 49, 60);
/* oklch */ color: oklch(51.2% 0.164 20.6);

Tailwind

colors: {
  custom: {
    50: '#d07371',
    500: '#b1313c',
    950: '#000000',
  },
}

SCSS

$custom: #b1313c;
$custom-light: #d07371;
$custom-dark: #000000;

JSON

{
  "hex": "#b1313c",
  "rgb": {
    "r": 177,
    "g": 49,
    "b": 60
  },
  "hsl": {
    "h": 354.844,
    "s": 56.637,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51163,
    "c": 0.1638,
    "h": 20.6
  },
  "luminance": 0.1187
}

Semantic roles & 50–950 ramp

primary

#B1313C

secondary

#79C5BE

accent

#E0D348

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150907

muted

#837B7A

Preview Lab

Preview with #B1313C

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

Preview Lab → · Contrast checker → · Palette generator →