#B1303D#B1303D

#B1303D is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.1% C 0.165 H 19.9°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#B1303D
RGB	rgb(177, 48, 61)
HSL	hsl(354, 57%, 44%)
HSV	hsv(354, 73%, 69%)
CMYK	cmyk(0%, 72.9%, 65.5%, 30.6%)
CIE-LAB	lab(40.90, 52.31, 23.56)
CIE-LCH	lch(40.90, 57.37, 24.25°)
OKLab	oklab(51.08% 0.1549 0.056)
OKLCH	oklch(51.08% 0.165 19.9)
XYZ	xyz(20.0328, 11.8009, 5.6369)
Luminance	0.1180 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1303D #30B1A4

analogous

#B1307E #B1303D #B16330

triadic

#B1303D #3DB130 #303DB1

tetradic

#B1303D #7EB130 #30B1A4 #6330B1

square

#B1303D #7EB130 #30B1A4 #6330B1

split-complementary

#B1303D #30B163 #307EB1

monochromatic

#51161C #81232C #B1303D #CF4F5C #DC7F88

Accessibility & contrast

On white

6.25

#B1303D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#B1303D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1303D

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1303D	#FFFFFF	#000000	##FFFFFF
##B1303D	1.00	6.25	3.36	6.25
#FFFFFF	6.25	1.00	21.00	1.00
#000000	3.36	21.00	1.00	21.00
##FFFFFF	6.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#544F3D

Deuteranopia (green-blind)

#756A39

Tritanopia (blue-blind)

#C20036

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b1303d;
/* rgb */ color: rgb(177, 48, 61);
/* oklch */ color: oklch(51.1% 0.165 19.9);

Tailwind

colors: {
  custom: {
    50: '#d07272',
    500: '#b1303d',
    950: '#000000',
  },
}

SCSS

$custom: #b1303d;
$custom-light: #d07272;
$custom-dark: #000000;

JSON

{
  "hex": "#b1303d",
  "rgb": {
    "r": 177,
    "g": 48,
    "b": 61
  },
  "hsl": {
    "h": 353.953,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.51082,
    "c": 0.16471,
    "h": 19.9
  },
  "luminance": 0.11798
}

Semantic roles & 50–950 ramp

primary

#B1303D

secondary

#78C5BD

accent

#E1D147

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150808

muted

#837B7B

Preview Lab

Preview with #B1303D

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

Preview Lab → · Contrast checker → · Palette generator →