#310B08#310B08

#310B08 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.6% C 0.063 H 28.1°. Best body text is #FFFFFF at 17.77:1 contrast (WCAG AA passes).

Color values

HEX	#310B08
RGB	rgb(49, 11, 8)
HSL	hsl(4, 72%, 11%)
HSV	hsv(4, 84%, 19%)
CMYK	cmyk(0%, 77.6%, 83.7%, 80.8%)
CIE-LAB	lab(8.22, 19.05, 9.45)
CIE-LCH	lch(8.22, 21.27, 26.38°)
OKLab	oklab(21.61% 0.0552 0.0295)
OKLCH	oklch(21.61% 0.063 28.1)
XYZ	xyz(1.4303, 0.9100, 0.3300)
Luminance	0.0091 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B08 #082E31

analogous

#310819 #310B08 #311F08

triadic

#310B08 #08310B #0B0831

tetradic

#310B08 #193108 #082E31 #1F0831

square

#310B08 #193108 #082E31 #1F0831

split-complementary

#310B08 #08311F #081931

monochromatic

#1A0604 #1A0604 #310B08 #661711 #9A2319

Accessibility & contrast

On white

17.77

#310B08 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310B08 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B08

17.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B08	#FFFFFF	#000000	##FFFFFF
##310B08	1.00	17.77	1.18	17.77
#FFFFFF	17.77	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#151307

Deuteranopia (green-blind)

#1F1B07

Tritanopia (blue-blind)

#37040B

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310b08;
/* rgb */ color: rgb(49, 11, 8);
/* oklch */ color: oklch(21.6% 0.063 28.1);

Tailwind

colors: {
  custom: {
    50: '#6c4c4a',
    500: '#310b08',
    950: '#000000',
  },
}

SCSS

$custom: #310b08;
$custom-light: #6c4c4a;
$custom-dark: #000000;

JSON

{
  "hex": "#310b08",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 8
  },
  "hsl": {
    "h": 4.39,
    "s": 71.93,
    "l": 11.176
  },
  "oklch": {
    "l": 0.21608,
    "c": 0.06255,
    "h": 28.1
  },
  "luminance": 0.0091
}

Semantic roles & 50–950 ramp

primary

#310B08

secondary

#256A70

accent

#E1EF39

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310B08

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

Preview Lab → · Contrast checker → · Palette generator →