#310F0A#310F0A

#310F0A is a very dark, muted red. Relative luminance 0.010; OKLCH L 22.3% C 0.057 H 30.6°. Best body text is #FFFFFF at 17.45:1 contrast (WCAG AA passes).

Color values

HEX	#310F0A
RGB	rgb(49, 15, 10)
HSL	hsl(8, 66%, 12%)
HSV	hsv(8, 80%, 19%)
CMYK	cmyk(0%, 69.4%, 79.6%, 80.8%)
CIE-LAB	lab(9.13, 16.89, 9.95)
CIE-LCH	lch(9.13, 19.60, 30.51°)
OKLab	oklab(22.31% 0.0489 0.0289)
OKLCH	oklch(22.31% 0.057 30.6)
XYZ	xyz(1.4924, 1.0167, 0.4048)
Luminance	0.0102 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310F0A #0A2C31

analogous

#310A19 #310F0A #31230A

triadic

#310F0A #0A310F #0F0A31

tetradic

#310F0A #19310A #0A2C31 #230A31

square

#310F0A #19310A #0A2C31 #230A31

split-complementary

#310F0A #0A3123 #0A1931

monochromatic

#190805 #190805 #310F0A #641F14 #972E1F

Accessibility & contrast

On white

17.45

#310F0A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#310F0A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310F0A

17.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310F0A	#FFFFFF	#000000	##FFFFFF
##310F0A	1.00	17.45	1.20	17.45
#FFFFFF	17.45	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#181509

Deuteranopia (green-blind)

#201D09

Tritanopia (blue-blind)

#37080E

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #310f0a;
/* rgb */ color: rgb(49, 15, 10);
/* oklch */ color: oklch(22.3% 0.057 30.6);

Tailwind

colors: {
  custom: {
    50: '#6c4f4b',
    500: '#310f0a',
    950: '#000000',
  },
}

SCSS

$custom: #310f0a;
$custom-light: #6c4f4b;
$custom-dark: #000000;

JSON

{
  "hex": "#310f0a",
  "rgb": {
    "r": 49,
    "g": 15,
    "b": 10
  },
  "hsl": {
    "h": 7.692,
    "s": 66.102,
    "l": 11.569
  },
  "oklch": {
    "l": 0.22307,
    "c": 0.05679,
    "h": 30.6
  },
  "luminance": 0.01017
}

Semantic roles & 50–950 ramp

primary

#310F0A

secondary

#29656E

accent

#D3E93F

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070201

muted

#7A7877

Preview Lab

Preview with #310F0A

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

Preview Lab → · Contrast checker → · Palette generator →