#B31E31#B31E31

#B31E31 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.8% C 0.182 H 21.2°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#B31E31
RGB	rgb(179, 30, 49)
HSL	hsl(352, 71%, 41%)
HSV	hsv(352, 83%, 70%)
CMYK	cmyk(0%, 83.2%, 72.6%, 29.8%)
CIE-LAB	lab(39.13, 57.81, 28.88)
CIE-LCH	lch(39.13, 64.62, 26.55°)
OKLab	oklab(49.78% 0.1696 0.0659)
OKLCH	oklch(49.78% 0.182 21.2)
XYZ	xyz(19.6114, 10.7372, 3.9450)
Luminance	0.1073 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B31E31 #1EB3A0

analogous

#B31E7B #B31E31 #B3551E

triadic

#B31E31 #31B31E #1E31B3

tetradic

#B31E31 #7BB31E #1EB3A0 #551EB3

square

#B31E31 #7BB31E #1EB3A0 #551EB3

split-complementary

#B31E31 #1EB355 #1E7BB3

monochromatic

#4A0C14 #7F1523 #B31E31 #DD3247 #E56676

Accessibility & contrast

On white

6.67

#B31E31 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#B31E31 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B31E31

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B31E31	#FFFFFF	#000000	##FFFFFF
##B31E31	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)

#4E4830

Deuteranopia (green-blind)

#72672C

Tritanopia (blue-blind)

#C50027

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b31e31;
/* rgb */ color: rgb(179, 30, 49);
/* oklch */ color: oklch(49.8% 0.182 21.2);

Tailwind

colors: {
  custom: {
    50: '#d36b69',
    500: '#b31e31',
    950: '#000000',
  },
}

SCSS

$custom: #b31e31;
$custom-light: #d36b69;
$custom-dark: #000000;

JSON

{
  "hex": "#b31e31",
  "rgb": {
    "r": 179,
    "g": 30,
    "b": 49
  },
  "hsl": {
    "h": 352.349,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.49783,
    "c": 0.18194,
    "h": 21.2
  },
  "luminance": 0.10734
}

Semantic roles & 50–950 ramp

primary

#B31E31

secondary

#62CBBD

accent

#EED73A

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160806

muted

#847A7A

Preview Lab

Preview with #B31E31

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

Preview Lab → · Contrast checker → · Palette generator →