#B7312F#B7312F

#B7312F is a mid, vivid red. Relative luminance 0.125; OKLCH L 52.0% C 0.171 H 26.1°. Best body text is #FFFFFF at 6.01:1 contrast (WCAG AA passes).

Color values

HEX	#B7312F
RGB	rgb(183, 49, 47)
HSL	hsl(1, 59%, 45%)
HSV	hsv(1, 74%, 72%)
CMYK	cmyk(0%, 73.2%, 74.3%, 28.2%)
CIE-LAB	lab(41.96, 53.14, 33.54)
CIE-LCH	lch(41.96, 62.83, 32.26°)
OKLab	oklab(52.01% 0.1538 0.0755)
OKLCH	oklch(52.01% 0.171 26.1)
XYZ	xyz(21.1423, 12.4724, 3.9829)
Luminance	0.1247 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B7312F #2FB5B7

analogous

#B72F71 #B7312F #B7752F

triadic

#B7312F #2FB731 #312FB7

tetradic

#B7312F #71B72F #2FB5B7 #752FB7

square

#B7312F #71B72F #2FB5B7 #752FB7

split-complementary

#B7312F #2FB775 #2F71B7

monochromatic

#561716 #862422 #B7312F #D25351 #DF8382

Accessibility & contrast

On white

6.01

#B7312F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.49

#B7312F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B7312F

6.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B7312F	#FFFFFF	#000000	##FFFFFF
##B7312F	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)

#58502D

Deuteranopia (green-blind)

#7A6E2A

Tritanopia (blue-blind)

#C90032

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #b7312f;
/* rgb */ color: rgb(183, 49, 47);
/* oklch */ color: oklch(52.0% 0.171 26.1);

Tailwind

colors: {
  custom: {
    50: '#d57368',
    500: '#b7312f',
    950: '#000000',
  },
}

SCSS

$custom: #b7312f;
$custom-light: #d57368;
$custom-dark: #000000;

JSON

{
  "hex": "#b7312f",
  "rgb": {
    "r": 183,
    "g": 49,
    "b": 47
  },
  "hsl": {
    "h": 0.882,
    "s": 59.13,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52012,
    "c": 0.17127,
    "h": 26.1
  },
  "luminance": 0.12469
}

Semantic roles & 50–950 ramp

primary

#B7312F

secondary

#7AC7C8

accent

#E0E245

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B7312F

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

Preview Lab → · Contrast checker → · Palette generator →