#B12831#B12831

#B12831 is a mid, vivid red. Relative luminance 0.111; OKLCH L 50.2% C 0.173 H 23.0°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#B12831
RGB	rgb(177, 40, 49)
HSL	hsl(356, 63%, 43%)
HSV	hsv(356, 77%, 69%)
CMYK	cmyk(0%, 77.4%, 72.3%, 30.6%)
CIE-LAB	lab(39.73, 54.41, 29.48)
CIE-LCH	lch(39.73, 61.88, 28.45°)
OKLab	oklab(50.15% 0.159 0.0674)
OKLCH	oklch(50.15% 0.173 23)
XYZ	xyz(19.4469, 11.0895, 4.0217)
Luminance	0.1109 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B12831 #28B1A8

analogous

#B12876 #B12831 #B16328

triadic

#B12831 #31B128 #2831B1

tetradic

#B12831 #76B128 #28B1A8 #6328B1

square

#B12831 #76B128 #28B1A8 #6328B1

split-complementary

#B12831 #28B163 #2876B1

monochromatic

#4D1115 #7F1D23 #B12831 #D4424C #E0747B

Accessibility & contrast

On white

6.53

#B12831 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#B12831 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B12831

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B12831	#FFFFFF	#000000	##FFFFFF
##B12831	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#514B30

Deuteranopia (green-blind)

#73682C

Tritanopia (blue-blind)

#C3002D

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #b12831;
/* rgb */ color: rgb(177, 40, 49);
/* oklch */ color: oklch(50.2% 0.173 23.0);

Tailwind

colors: {
  custom: {
    50: '#d16e69',
    500: '#b12831',
    950: '#000000',
  },
}

SCSS

$custom: #b12831;
$custom-light: #d16e69;
$custom-dark: #000000;

JSON

{
  "hex": "#b12831",
  "rgb": {
    "r": 177,
    "g": 40,
    "b": 49
  },
  "hsl": {
    "h": 356.058,
    "s": 63.134,
    "l": 42.549
  },
  "oklch": {
    "l": 0.50154,
    "c": 0.17267,
    "h": 23
  },
  "luminance": 0.11086
}

Semantic roles & 50–950 ramp

primary

#B12831

secondary

#6EC7C1

accent

#E6DB42

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160806

muted

#847B7A

Preview Lab

Preview with #B12831

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

Preview Lab → · Contrast checker → · Palette generator →