#B1303C#B1303C

#B1303C is a mid, vivid red. Relative luminance 0.118; OKLCH L 51.1% C 0.165 H 20.3°. Best body text is #FFFFFF at 6.25:1 contrast (WCAG AA passes).

Color values

HEX	#B1303C
RGB	rgb(177, 48, 60)
HSL	hsl(354, 57%, 44%)
HSV	hsv(354, 73%, 69%)
CMYK	cmyk(0%, 72.9%, 66.1%, 30.6%)
CIE-LAB	lab(40.88, 52.25, 24.15)
CIE-LCH	lch(40.88, 57.56, 24.81°)
OKLab	oklab(51.06% 0.1545 0.0573)
OKLCH	oklch(51.06% 0.165 20.3)
XYZ	xyz(20.0062, 11.7902, 5.4964)
Luminance	0.1179 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1303C #30B1A5

analogous

#B1307D #B1303C #B16530

triadic

#B1303C #3CB130 #303CB1

tetradic

#B1303C #7DB130 #30B1A5 #6530B1

square

#B1303C #7DB130 #30B1A5 #6530B1

split-complementary

#B1303C #30B165 #307DB1

monochromatic

#51161B #81232C #B1303C #CF4F5B #DC7F88

Accessibility & contrast

On white

6.25

#B1303C on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.36

#B1303C on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1303C

6.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1303C	#FFFFFF	#000000	##FFFFFF
##B1303C	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)

#544F3B

Deuteranopia (green-blind)

#756A38

Tritanopia (blue-blind)

#C20036

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b1303c;
/* rgb */ color: rgb(177, 48, 60);
/* oklch */ color: oklch(51.1% 0.165 20.3);

Tailwind

colors: {
  custom: {
    50: '#d07271',
    500: '#b1303c',
    950: '#000000',
  },
}

SCSS

$custom: #b1303c;
$custom-light: #d07271;
$custom-dark: #000000;

JSON

{
  "hex": "#b1303c",
  "rgb": {
    "r": 177,
    "g": 48,
    "b": 60
  },
  "hsl": {
    "h": 354.419,
    "s": 57.333,
    "l": 44.118
  },
  "oklch": {
    "l": 0.51064,
    "c": 0.16477,
    "h": 20.3
  },
  "luminance": 0.11787
}

Semantic roles & 50–950 ramp

primary

#B1303C

secondary

#78C5BE

accent

#E1D247

background

#FDF7F6

surface

#FBEDEC

border

#D4C8C7

text

#150807

muted

#837B7A

Preview Lab

Preview with #B1303C

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

Preview Lab → · Contrast checker → · Palette generator →