#310A11#310A11

#310A11 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.7% C 0.063 H 13.6°. Best body text is #FFFFFF at 17.76:1 contrast (WCAG AA passes).

Color values

HEX	#310A11
RGB	rgb(49, 10, 17)
HSL	hsl(349, 66%, 12%)
HSV	hsv(349, 80%, 19%)
CMYK	cmyk(0%, 79.6%, 65.3%, 80.8%)
CIE-LAB	lab(8.22, 20.34, 5.19)
CIE-LCH	lch(8.22, 21.00, 14.32°)
OKLab	oklab(21.68% 0.0613 0.0148)
OKLCH	oklch(21.68% 0.063 13.6)
XYZ	xyz(1.4765, 0.9107, 0.6282)
Luminance	0.0091 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310A11 #0A312A

analogous

#310A25 #310A11 #31170A

triadic

#310A11 #11310A #0A1131

tetradic

#310A11 #25310A #0A312A #170A31

square

#310A11 #25310A #0A312A #170A31

split-complementary

#310A11 #0A3117 #0A2531

monochromatic

#190509 #190509 #310A11 #641423 #971F34

Accessibility & contrast

On white

17.76

#310A11 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310A11 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310A11

17.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310A11	#FFFFFF	#000000	##FFFFFF
##310A11	1.00	17.76	1.18	17.76
#FFFFFF	17.76	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131311

Deuteranopia (green-blind)

#1D1B10

Tritanopia (blue-blind)

#36040D

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310a11;
/* rgb */ color: rgb(49, 10, 17);
/* oklch */ color: oklch(21.7% 0.063 13.6);

Tailwind

colors: {
  custom: {
    50: '#6c4c4f',
    500: '#310a11',
    950: '#000000',
  },
}

SCSS

$custom: #310a11;
$custom-light: #6c4c4f;
$custom-dark: #000000;

JSON

{
  "hex": "#310a11",
  "rgb": {
    "r": 49,
    "g": 10,
    "b": 17
  },
  "hsl": {
    "h": 349.231,
    "s": 66.102,
    "l": 11.569
  },
  "oklch": {
    "l": 0.21678,
    "c": 0.0631,
    "h": 13.6
  },
  "luminance": 0.00911
}

Semantic roles & 50–950 ramp

primary

#310A11

secondary

#296E62

accent

#E9CA3F

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310A11

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

Preview Lab → · Contrast checker → · Palette generator →