#B12731#B12731

#B12731 is a mid, vivid red. Relative luminance 0.110; OKLCH L 50.1% C 0.173 H 22.7°. Best body text is #FFFFFF at 6.55:1 contrast (WCAG AA passes).

Color values

HEX	#B12731
RGB	rgb(177, 39, 49)
HSL	hsl(356, 64%, 42%)
HSV	hsv(356, 78%, 69%)
CMYK	cmyk(0%, 78%, 72.3%, 30.6%)
CIE-LAB	lab(39.62, 54.72, 29.35)
CIE-LCH	lch(39.62, 62.10, 28.21°)
OKLab	oklab(50.07% 0.16 0.0671)
OKLCH	oklch(50.07% 0.173 22.7)
XYZ	xyz(19.4136, 11.0229, 4.0106)
Luminance	0.1102 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B12731 #27B1A7

analogous

#B12776 #B12731 #B16227

triadic

#B12731 #31B127 #2731B1

tetradic

#B12731 #76B127 #27B1A7 #6227B1

square

#B12731 #76B127 #27B1A7 #6227B1

split-complementary

#B12731 #27B162 #2776B1

monochromatic

#4D1115 #7F1C23 #B12731 #D5404B #E0727A

Accessibility & contrast

On white

6.55

#B12731 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#B12731 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B12731

6.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B12731	#FFFFFF	#000000	##FFFFFF
##B12731	1.00	6.55	3.20	6.55
#FFFFFF	6.55	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514A30

Deuteranopia (green-blind)

#73682C

Tritanopia (blue-blind)

#C3002C

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #b12731;
/* rgb */ color: rgb(177, 39, 49);
/* oklch */ color: oklch(50.1% 0.173 22.7);

Tailwind

colors: {
  custom: {
    50: '#d16e69',
    500: '#b12731',
    950: '#000000',
  },
}

SCSS

$custom: #b12731;
$custom-light: #d16e69;
$custom-dark: #000000;

JSON

{
  "hex": "#b12731",
  "rgb": {
    "r": 177,
    "g": 39,
    "b": 49
  },
  "hsl": {
    "h": 355.652,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.50071,
    "c": 0.17348,
    "h": 22.7
  },
  "luminance": 0.1102
}

Semantic roles & 50–950 ramp

primary

#B12731

secondary

#6DC7C1

accent

#E7DB41

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160806

muted

#847B7A

Preview Lab

Preview with #B12731

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

Preview Lab → · Contrast checker → · Palette generator →