#B31E33#B31E33

#B31E33 is a mid, vivid red. Relative luminance 0.108; OKLCH L 49.8% C 0.182 H 20.5°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#B31E33
RGB	rgb(179, 30, 51)
HSL	hsl(352, 71%, 41%)
HSV	hsv(352, 83%, 70%)
CMYK	cmyk(0%, 83.2%, 71.5%, 29.8%)
CIE-LAB	lab(39.16, 57.90, 27.68)
CIE-LCH	lch(39.16, 64.18, 25.55°)
OKLab	oklab(49.81% 0.1703 0.0637)
OKLCH	oklch(49.81% 0.182 20.5)
XYZ	xyz(19.6545, 10.7544, 4.1723)
Luminance	0.1075 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B31E33 #1EB39E

analogous

#B31E7D #B31E33 #B3541E

triadic

#B31E33 #33B31E #1E33B3

tetradic

#B31E33 #7DB31E #1EB39E #541EB3

square

#B31E33 #7DB31E #1EB39E #541EB3

split-complementary

#B31E33 #1EB354 #1E7DB3

monochromatic

#4A0C15 #7F1524 #B31E33 #DD324A #E56678

Accessibility & contrast

On white

6.67

#B31E33 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#B31E33 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B31E33

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B31E33	#FFFFFF	#000000	##FFFFFF
##B31E33	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E4832

Deuteranopia (green-blind)

#72672E

Tritanopia (blue-blind)

#C50028

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b31e33;
/* rgb */ color: rgb(179, 30, 51);
/* oklch */ color: oklch(49.8% 0.182 20.5);

Tailwind

colors: {
  custom: {
    50: '#d26b6a',
    500: '#b31e33',
    950: '#000000',
  },
}

SCSS

$custom: #b31e33;
$custom-light: #d26b6a;
$custom-dark: #000000;

JSON

{
  "hex": "#b31e33",
  "rgb": {
    "r": 179,
    "g": 30,
    "b": 51
  },
  "hsl": {
    "h": 351.544,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.49814,
    "c": 0.18183,
    "h": 20.5
  },
  "luminance": 0.10751
}

Semantic roles & 50–950 ramp

primary

#B31E33

secondary

#62CBBC

accent

#EED53A

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160806

muted

#847A7A

Preview Lab

Preview with #B31E33

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

Preview Lab → · Contrast checker → · Palette generator →