#310909#310909

#310909 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.3% C 0.065 H 24.5°. Best body text is #FFFFFF at 17.89:1 contrast (WCAG AA passes).

Color values

HEX	#310909
RGB	rgb(49, 9, 9)
HSL	hsl(0, 69%, 11%)
HSV	hsv(0, 82%, 19%)
CMYK	cmyk(0%, 81.6%, 81.6%, 80.8%)
CIE-LAB	lab(7.84, 20.19, 8.50)
CIE-LCH	lch(7.84, 21.91, 22.82°)
OKLab	oklab(21.33% 0.0591 0.0269)
OKLCH	oklch(21.33% 0.065 24.5)
XYZ	xyz(1.4138, 0.8683, 0.3515)
Luminance	0.0087 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310909 #093131

analogous

#31091D #310909 #311D09

triadic

#310909 #093109 #090931

tetradic

#310909 #1D3109 #093131 #1D0931

square

#310909 #1D3109 #093131 #1D0931

split-complementary

#310909 #09311D #091D31

monochromatic

#1A0505 #1A0505 #310909 #651212 #981C1C

Accessibility & contrast

On white

17.89

#310909 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#310909 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310909

17.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310909	#FFFFFF	#000000	##FFFFFF
##310909	1.00	17.89	1.17	17.89
#FFFFFF	17.89	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#141209

Deuteranopia (green-blind)

#1E1A08

Tritanopia (blue-blind)

#370209

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #310909;
/* rgb */ color: rgb(49, 9, 9);
/* oklch */ color: oklch(21.3% 0.065 24.5);

Tailwind

colors: {
  custom: {
    50: '#6c4b4b',
    500: '#310909',
    950: '#000000',
  },
}

SCSS

$custom: #310909;
$custom-light: #6c4b4b;
$custom-dark: #000000;

JSON

{
  "hex": "#310909",
  "rgb": {
    "r": 49,
    "g": 9,
    "b": 9
  },
  "hsl": {
    "h": 0,
    "s": 68.966,
    "l": 11.373
  },
  "oklch": {
    "l": 0.21332,
    "c": 0.0649,
    "h": 24.5
  },
  "luminance": 0.00868
}

Semantic roles & 50–950 ramp

primary

#310909

secondary

#276F6F

accent

#ECEC3C

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310909

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

Preview Lab → · Contrast checker → · Palette generator →