#310A13#310A13

#310A13 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.7% C 0.063 H 10.3°. Best body text is #FFFFFF at 17.75:1 contrast (WCAG AA passes).

Color values

HEX	#310A13
RGB	rgb(49, 10, 19)
HSL	hsl(346, 66%, 12%)
HSV	hsv(346, 80%, 19%)
CMYK	cmyk(0%, 79.6%, 61.2%, 80.8%)
CIE-LAB	lab(8.28, 20.55, 4.06)
CIE-LCH	lch(8.28, 20.95, 11.18°)
OKLab	oklab(21.74% 0.0623 0.0113)
OKLCH	oklch(21.74% 0.063 10.3)
XYZ	xyz(1.4928, 0.9173, 0.7144)
Luminance	0.0092 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310A13 #0A3128

analogous

#310A27 #310A13 #31150A

triadic

#310A13 #13310A #0A1331

tetradic

#310A13 #27310A #0A3128 #150A31

square

#310A13 #27310A #0A3128 #150A31

split-complementary

#310A13 #0A3115 #0A2731

monochromatic

#19050A #19050A #310A13 #641427 #971F3A

Accessibility & contrast

On white

17.75

#310A13 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310A13 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310A13

17.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310A13	#FFFFFF	#000000	##FFFFFF
##310A13	1.00	17.75	1.18	17.75
#FFFFFF	17.75	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131313

Deuteranopia (green-blind)

#1D1B12

Tritanopia (blue-blind)

#36050E

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310a13;
/* rgb */ color: rgb(49, 10, 19);
/* oklch */ color: oklch(21.7% 0.063 10.3);

Tailwind

colors: {
  custom: {
    50: '#6c4c50',
    500: '#310a13',
    950: '#000000',
  },
}

SCSS

$custom: #310a13;
$custom-light: #6c4c50;
$custom-dark: #000000;

JSON

{
  "hex": "#310a13",
  "rgb": {
    "r": 49,
    "g": 10,
    "b": 19
  },
  "hsl": {
    "h": 346.154,
    "s": 66.102,
    "l": 11.569
  },
  "oklch": {
    "l": 0.2174,
    "c": 0.06334,
    "h": 10.3
  },
  "luminance": 0.00917
}

Semantic roles & 50–950 ramp

primary

#310A13

secondary

#296E5E

accent

#E9C23F

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070102

muted

#7A7778

Preview Lab

Preview with #310A13

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

Preview Lab → · Contrast checker → · Palette generator →