#310C09#310C09

#310C09 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.8% C 0.061 H 27.9°. Best body text is #FFFFFF at 17.69:1 contrast (WCAG AA passes).

Color values

HEX	#310C09
RGB	rgb(49, 12, 9)
HSL	hsl(5, 69%, 11%)
HSV	hsv(5, 82%, 19%)
CMYK	cmyk(0%, 75.5%, 81.6%, 80.8%)
CIE-LAB	lab(8.44, 18.57, 9.37)
CIE-LCH	lch(8.44, 20.80, 26.78°)
OKLab	oklab(21.78% 0.0539 0.0285)
OKLCH	oklch(21.78% 0.061 27.9)
XYZ	xyz(1.4475, 0.9358, 0.3628)
Luminance	0.0094 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310C09 #092E31

analogous

#31091A #310C09 #312009

triadic

#310C09 #09310C #0C0931

tetradic

#310C09 #1A3109 #092E31 #200931

square

#310C09 #1A3109 #092E31 #200931

split-complementary

#310C09 #093120 #091A31

monochromatic

#1A0605 #1A0605 #310C09 #651912 #98251C

Accessibility & contrast

On white

17.69

#310C09 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310C09 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310C09

17.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310C09	#FFFFFF	#000000	##FFFFFF
##310C09	1.00	17.69	1.19	17.69
#FFFFFF	17.69	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#161308

Deuteranopia (green-blind)

#1F1B08

Tritanopia (blue-blind)

#37050C

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310c09;
/* rgb */ color: rgb(49, 12, 9);
/* oklch */ color: oklch(21.8% 0.061 27.9);

Tailwind

colors: {
  custom: {
    50: '#6c4d4b',
    500: '#310c09',
    950: '#000000',
  },
}

SCSS

$custom: #310c09;
$custom-light: #6c4d4b;
$custom-dark: #000000;

JSON

{
  "hex": "#310c09",
  "rgb": {
    "r": 49,
    "g": 12,
    "b": 9
  },
  "hsl": {
    "h": 4.5,
    "s": 68.966,
    "l": 11.373
  },
  "oklch": {
    "l": 0.21784,
    "c": 0.06101,
    "h": 27.9
  },
  "luminance": 0.00936
}

Semantic roles & 50–950 ramp

primary

#310C09

secondary

#276A6F

accent

#DFEC3C

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310C09

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

Preview Lab → · Contrast checker → · Palette generator →