#B3312F#B3312F

#B3312F is a mid, vivid red. Relative luminance 0.120; OKLCH L 51.3% C 0.167 H 26.0°. Best body text is #FFFFFF at 6.18:1 contrast (WCAG AA passes).

Color values

HEX	#B3312F
RGB	rgb(179, 49, 47)
HSL	hsl(1, 58%, 44%)
HSV	hsv(1, 74%, 70%)
CMYK	cmyk(0%, 72.6%, 73.7%, 29.8%)
CIE-LAB	lab(41.20, 51.86, 32.47)
CIE-LCH	lch(41.20, 61.19, 32.05°)
OKLab	oklab(51.31% 0.1502 0.0734)
OKLCH	oklch(51.31% 0.167 26)
XYZ	xyz(20.2041, 11.9886, 3.9390)
Luminance	0.1199 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B3312F #2FB1B3

analogous

#B32F6F #B3312F #B3732F

triadic

#B3312F #2FB331 #312FB3

tetradic

#B3312F #6FB32F #2FB1B3 #732FB3

square

#B3312F #6FB32F #2FB1B3 #732FB3

split-complementary

#B3312F #2FB373 #2F6FB3

monochromatic

#521616 #832422 #B3312F #D1514F #DD807F

Accessibility & contrast

On white

6.18

#B3312F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.40

#B3312F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B3312F

6.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B3312F	#FFFFFF	#000000	##FFFFFF
##B3312F	1.00	6.18	3.40	6.18
#FFFFFF	6.18	1.00	21.00	1.00
#000000	3.40	21.00	1.00	21.00
##FFFFFF	6.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#574F2D

Deuteranopia (green-blind)

#776B2A

Tritanopia (blue-blind)

#C50032

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #b3312f;
/* rgb */ color: rgb(179, 49, 47);
/* oklch */ color: oklch(51.3% 0.167 26.0);

Tailwind

colors: {
  custom: {
    50: '#d27368',
    500: '#b3312f',
    950: '#000000',
  },
}

SCSS

$custom: #b3312f;
$custom-light: #d27368;
$custom-dark: #000000;

JSON

{
  "hex": "#b3312f",
  "rgb": {
    "r": 179,
    "g": 49,
    "b": 47
  },
  "hsl": {
    "h": 0.909,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51307,
    "c": 0.16718,
    "h": 26
  },
  "luminance": 0.11986
}

Semantic roles & 50–950 ramp

primary

#B3312F

secondary

#78C5C6

accent

#DFE246

background

#FEF7F6

surface

#FCEDEB

border

#D5C8C6

text

#160906

muted

#847B7A

Preview Lab

Preview with #B3312F

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

Preview Lab → · Contrast checker → · Palette generator →