#B31E30#B31E30

#B31E30 is a mid, vivid red. Relative luminance 0.107; OKLCH L 49.8% C 0.182 H 21.6°. Best body text is #FFFFFF at 6.68:1 contrast (WCAG AA passes).

Color values

HEX	#B31E30
RGB	rgb(179, 30, 48)
HSL	hsl(353, 71%, 41%)
HSV	hsv(353, 83%, 70%)
CMYK	cmyk(0%, 83.2%, 73.2%, 29.8%)
CIE-LAB	lab(39.12, 57.77, 29.47)
CIE-LCH	lch(39.12, 64.85, 27.03°)
OKLab	oklab(49.77% 0.1692 0.067)
OKLCH	oklch(49.77% 0.182 21.6)
XYZ	xyz(19.5905, 10.7288, 3.8351)
Luminance	0.1073 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#B31E30 #1EB3A1

analogous

#B31E7A #B31E30 #B3561E

triadic

#B31E30 #30B31E #1E30B3

tetradic

#B31E30 #7AB31E #1EB3A1 #561EB3

square

#B31E30 #7AB31E #1EB3A1 #561EB3

split-complementary

#B31E30 #1EB356 #1E7AB3

monochromatic

#4A0C14 #7F1522 #B31E30 #DD3246 #E56675

Accessibility & contrast

On white

6.68

#B31E30 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#B31E30 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #B31E30

6.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##B31E30	#FFFFFF	#000000	##FFFFFF
##B31E30	1.00	6.68	3.15	6.68
#FFFFFF	6.68	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E482F

Deuteranopia (green-blind)

#73672B

Tritanopia (blue-blind)

#C50027

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #b31e30;
/* rgb */ color: rgb(179, 30, 48);
/* oklch */ color: oklch(49.8% 0.182 21.6);

Tailwind

colors: {
  custom: {
    50: '#d36b68',
    500: '#b31e30',
    950: '#000000',
  },
}

SCSS

$custom: #b31e30;
$custom-light: #d36b68;
$custom-dark: #000000;

JSON

{
  "hex": "#b31e30",
  "rgb": {
    "r": 179,
    "g": 30,
    "b": 48
  },
  "hsl": {
    "h": 352.752,
    "s": 71.292,
    "l": 40.98
  },
  "oklch": {
    "l": 0.49768,
    "c": 0.18199,
    "h": 21.6
  },
  "luminance": 0.10726
}

Semantic roles & 50–950 ramp

primary

#B31E30

secondary

#62CBBE

accent

#EED83A

background

#FEF6F6

surface

#FCECEB

border

#D5C7C6

text

#160806

muted

#847A7A

Preview Lab

Preview with #B31E30

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

Preview Lab → · Contrast checker → · Palette generator →