#310B0C#310B0C

#310B0C is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.7% C 0.062 H 22.4°. Best body text is #FFFFFF at 17.74:1 contrast (WCAG AA passes).

Color values

HEX	#310B0C
RGB	rgb(49, 11, 12)
HSL	hsl(358, 63%, 12%)
HSV	hsv(358, 78%, 19%)
CMYK	cmyk(0%, 77.6%, 75.5%, 80.8%)
CIE-LAB	lab(8.30, 19.35, 7.89)
CIE-LCH	lch(8.30, 20.90, 22.18°)
OKLab	oklab(21.69% 0.0572 0.0235)
OKLCH	oklch(21.69% 0.062 22.4)
XYZ	xyz(1.4528, 0.9191, 0.4486)
Luminance	0.0092 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310B0C #0B3130

analogous

#310B1F #310B0C #311D0B

triadic

#310B0C #0C310B #0B0C31

tetradic

#310B0C #1F310B #0B3130 #1D0B31

square

#310B0C #1F310B #0B3130 #1D0B31

split-complementary

#310B0C #0B311D #0B1F31

monochromatic

#190606 #190606 #310B0C #631618 #952124

Accessibility & contrast

On white

17.74

#310B0C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310B0C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310B0C

17.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310B0C	#FFFFFF	#000000	##FFFFFF
##310B0C	1.00	17.74	1.18	17.74
#FFFFFF	17.74	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#15130C

Deuteranopia (green-blind)

#1E1B0B

Tritanopia (blue-blind)

#37040C

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310b0c;
/* rgb */ color: rgb(49, 11, 12);
/* oklch */ color: oklch(21.7% 0.062 22.4);

Tailwind

colors: {
  custom: {
    50: '#6c4c4c',
    500: '#310b0c',
    950: '#000000',
  },
}

SCSS

$custom: #310b0c;
$custom-light: #6c4c4c;
$custom-dark: #000000;

JSON

{
  "hex": "#310b0c",
  "rgb": {
    "r": 49,
    "g": 11,
    "b": 12
  },
  "hsl": {
    "h": 358.421,
    "s": 63.333,
    "l": 11.765
  },
  "oklch": {
    "l": 0.21693,
    "c": 0.06181,
    "h": 22.4
  },
  "luminance": 0.00919
}

Semantic roles & 50–950 ramp

primary

#310B0C

secondary

#2A6E6C

accent

#E6E241

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310B0C

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

Preview Lab → · Contrast checker → · Palette generator →