#B1312E#B1312E

#B1312E is a mid, vivid red. Relative luminance 0.117; OKLCH L 50.9% C 0.165 H 26.4°. Best body text is #FFFFFF at 6.27:1 contrast (WCAG AA passes).

Color values

HEX	#B1312E
RGB	rgb(177, 49, 46)
HSL	hsl(1, 59%, 44%)
HSV	hsv(1, 74%, 69%)
CMYK	cmyk(0%, 72.3%, 74%, 30.6%)
CIE-LAB	lab(40.81, 51.17, 32.51)
CIE-LCH	lch(40.81, 60.63, 32.43°)
OKLab	oklab(50.94% 0.1481 0.0734)
OKLCH	oklch(50.94% 0.165 26.4)
XYZ	xyz(19.7252, 11.7440, 3.8124)
Luminance	0.1174 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B1312E #2EAEB1

analogous

#B12E6C #B1312E #B1722E

triadic

#B1312E #2EB131 #312EB1

tetradic

#B1312E #6CB12E #2EAEB1 #722EB1

square

#B1312E #6CB12E #2EAEB1 #722EB1

split-complementary

#B1312E #2EB172 #2E6CB1

monochromatic

#501615 #802421 #B1312E #D04F4C #DD7F7C

Accessibility & contrast

On white

6.27

#B1312E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.35

#B1312E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B1312E

6.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B1312E	#FFFFFF	#000000	##FFFFFF
##B1312E	1.00	6.27	3.35	6.27
#FFFFFF	6.27	1.00	21.00	1.00
#000000	3.35	21.00	1.00	21.00
##FFFFFF	6.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#564F2C

Deuteranopia (green-blind)

#766A29

Tritanopia (blue-blind)

#C30032

Achromatopsia (no color)

#606060

Design tokens & code

CSS

--color: #b1312e;
/* rgb */ color: rgb(177, 49, 46);
/* oklch */ color: oklch(50.9% 0.165 26.4);

Tailwind

colors: {
  custom: {
    50: '#d17267',
    500: '#b1312e',
    950: '#000000',
  },
}

SCSS

$custom: #b1312e;
$custom-light: #d17267;
$custom-dark: #000000;

JSON

{
  "hex": "#b1312e",
  "rgb": {
    "r": 177,
    "g": 49,
    "b": 46
  },
  "hsl": {
    "h": 1.374,
    "s": 58.744,
    "l": 43.725
  },
  "oklch": {
    "l": 0.50942,
    "c": 0.16525,
    "h": 26.4
  },
  "luminance": 0.11741
}

Semantic roles & 50–950 ramp

primary

#B1312E

secondary

#75C4C6

accent

#DEE246

background

#FDF7F6

surface

#FBEDEB

border

#D4C8C6

text

#150806

muted

#837B7A

Preview Lab

Preview with #B1312E

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

Preview Lab → · Contrast checker → · Palette generator →