#310A09#310A09

#310A09 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.5% C 0.064 H 25.6°. Best body text is #FFFFFF at 17.83:1 contrast (WCAG AA passes).

Color values

HEX	#310A09
RGB	rgb(49, 10, 9)
HSL	hsl(2, 69%, 11%)
HSV	hsv(2, 82%, 19%)
CMYK	cmyk(0%, 79.6%, 81.6%, 80.8%)
CIE-LAB	lab(8.04, 19.66, 8.78)
CIE-LCH	lch(8.04, 21.53, 24.06°)
OKLab	oklab(21.48% 0.0574 0.0274)
OKLCH	oklch(21.48% 0.064 25.6)
XYZ	xyz(1.4246, 0.8900, 0.3552)
Luminance	0.0089 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310A09 #093031

analogous

#31091C #310A09 #311E09

triadic

#310A09 #09310A #0A0931

tetradic

#310A09 #1C3109 #093031 #1E0931

square

#310A09 #1C3109 #093031 #1E0931

split-complementary

#310A09 #09311E #091C31

monochromatic

#1A0505 #1A0505 #310A09 #651512 #981F1C

Accessibility & contrast

On white

17.83

#310A09 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310A09 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310A09

17.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310A09	#FFFFFF	#000000	##FFFFFF
##310A09	1.00	17.83	1.18	17.83
#FFFFFF	17.83	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151209

Deuteranopia (green-blind)

#1E1B08

Tritanopia (blue-blind)

#37030A

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310a09;
/* rgb */ color: rgb(49, 10, 9);
/* oklch */ color: oklch(21.5% 0.064 25.6);

Tailwind

colors: {
  custom: {
    50: '#6c4c4b',
    500: '#310a09',
    950: '#000000',
  },
}

SCSS

$custom: #310a09;
$custom-light: #6c4c4b;
$custom-dark: #000000;

JSON

{
  "hex": "#310a09",
  "rgb": {
    "r": 49,
    "g": 10,
    "b": 9
  },
  "hsl": {
    "h": 1.5,
    "s": 68.966,
    "l": 11.373
  },
  "oklch": {
    "l": 0.21479,
    "c": 0.06359,
    "h": 25.6
  },
  "luminance": 0.0089
}

Semantic roles & 50–950 ramp

primary

#310A09

secondary

#276D6F

accent

#E7EC3C

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310A09

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

Preview Lab → · Contrast checker → · Palette generator →