#B7312E#B7312E

#B7312E is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.0% C 0.171 H 26.5°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#B7312E
RGB	rgb(183, 49, 46)
HSL	hsl(1, 60%, 45%)
HSV	hsv(1, 75%, 72%)
CMYK	cmyk(0%, 73.2%, 74.9%, 28.2%)
CIE-LAB	lab(41.94, 53.09, 34.10)
CIE-LCH	lch(41.94, 63.10, 32.71°)
OKLab	oklab(52% 0.1534 0.0765)
OKLCH	oklch(52% 0.171 26.5)
XYZ	xyz(21.1223, 12.4644, 3.8779)
Luminance	0.1246 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B7312E #2EB4B7

analogous

#B72E6F #B7312E #B7762E

triadic

#B7312E #2EB731 #312EB7

tetradic

#B7312E #6FB72E #2EB4B7 #762EB7

square

#B7312E #6FB72E #2EB4B7 #762EB7

split-complementary

#B7312E #2EB776 #2E6FB7

monochromatic

#551715 #862422 #B7312E #D3524F #DF8280

Accessibility & contrast

On white

6.01

#B7312E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#B7312E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B7312E

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B7312E	#FFFFFF	#000000	##FFFFFF
##B7312E	1.00	6.01	3.49	6.01
#FFFFFF	6.01	1.00	21.00	1.00
#000000	3.49	21.00	1.00	21.00
##FFFFFF	6.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#59502C

Deuteranopia (green-blind)

#7A6E29

Tritanopia (blue-blind)

#C90032

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b7312e;
/* rgb */ color: rgb(183, 49, 46);
/* oklch */ color: oklch(52.0% 0.171 26.5);

Tailwind

colors: {
  custom: {
    50: '#d57367',
    500: '#b7312e',
    950: '#000000',
  },
}

SCSS

$custom: #b7312e;
$custom-light: #d57367;
$custom-dark: #000000;

JSON

{
  "hex": "#b7312e",
  "rgb": {
    "r": 183,
    "g": 49,
    "b": 46
  },
  "hsl": {
    "h": 1.314,
    "s": 59.825,
    "l": 44.902
  },
  "oklch": {
    "l": 0.51998,
    "c": 0.17139,
    "h": 26.5
  },
  "luminance": 0.12461
}

Semantic roles & 50–950 ramp

primary

#B7312E

secondary

#79C6C8

accent

#E0E345

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B7312E

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

Preview Lab → · Contrast checker → · Palette generator →