#310808#310808

#310808 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 21.2% C 0.066 H 24.9°. Best body text is #FFFFFF at 17.97:1 contrast (WCAG AA passes).

Color values

HEX	#310808
RGB	rgb(49, 8, 8)
HSL	hsl(0, 72%, 11%)
HSV	hsv(0, 84%, 19%)
CMYK	cmyk(0%, 83.7%, 83.7%, 80.8%)
CIE-LAB	lab(7.63, 20.65, 8.59)
CIE-LCH	lch(7.63, 22.36, 22.58°)
OKLab	oklab(21.16% 0.0603 0.0279)
OKLCH	oklch(21.16% 0.066 24.9)
XYZ	xyz(1.3974, 0.8444, 0.3191)
Luminance	0.0084 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310808 #083131

analogous

#31081C #310808 #311C08

triadic

#310808 #083108 #080831

tetradic

#310808 #1C3108 #083131 #1C0831

square

#310808 #1C3108 #083131 #1C0831

split-complementary

#310808 #08311C #081C31

monochromatic

#1A0404 #1A0404 #310808 #661111 #9A1919

Accessibility & contrast

On white

17.97

#310808 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.17

#310808 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310808

17.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310808	#FFFFFF	#000000	##FFFFFF
##310808	1.00	17.97	1.17	17.97
#FFFFFF	17.97	1.00	21.00	1.00
#000000	1.17	21.00	1.00	21.00
##FFFFFF	17.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#131108

Deuteranopia (green-blind)

#1E1A07

Tritanopia (blue-blind)

#370108

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #310808;
/* rgb */ color: rgb(49, 8, 8);
/* oklch */ color: oklch(21.2% 0.066 24.9);

Tailwind

colors: {
  custom: {
    50: '#6d4a4a',
    500: '#310808',
    950: '#000000',
  },
}

SCSS

$custom: #310808;
$custom-light: #6d4a4a;
$custom-dark: #000000;

JSON

{
  "hex": "#310808",
  "rgb": {
    "r": 49,
    "g": 8,
    "b": 8
  },
  "hsl": {
    "h": 0,
    "s": 71.93,
    "l": 11.176
  },
  "oklch": {
    "l": 0.2116,
    "c": 0.06643,
    "h": 24.9
  },
  "luminance": 0.00844
}

Semantic roles & 50–950 ramp

primary

#310808

secondary

#257070

accent

#EFEF39

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310808

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

Preview Lab → · Contrast checker → · Palette generator →