#310A0C#310A0C

#310A0C is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.5% C 0.063 H 21.3°. Best body text is #FFFFFF at 17.81:1 contrast (WCAG AA passes).

Color values

HEX	#310A0C
RGB	rgb(49, 10, 12)
HSL	hsl(357, 66%, 12%)
HSV	hsv(357, 80%, 19%)
CMYK	cmyk(0%, 79.6%, 75.5%, 80.8%)
CIE-LAB	lab(8.10, 19.89, 7.60)
CIE-LCH	lch(8.10, 21.29, 20.92°)
OKLab	oklab(21.55% 0.0588 0.023)
OKLCH	oklch(21.55% 0.063 21.3)
XYZ	xyz(1.4417, 0.8968, 0.4449)
Luminance	0.0090 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310A0C #0A312F

analogous

#310A20 #310A0C #311C0A

triadic

#310A0C #0C310A #0A0C31

tetradic

#310A0C #20310A #0A312F #1C0A31

square

#310A0C #20310A #0A312F #1C0A31

split-complementary

#310A0C #0A311C #0A2031

monochromatic

#190506 #190506 #310A0C #641418 #971F25

Accessibility & contrast

On white

17.81

#310A0C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310A0C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310A0C

17.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310A0C	#FFFFFF	#000000	##FFFFFF
##310A0C	1.00	17.81	1.18	17.81
#FFFFFF	17.81	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14120C

Deuteranopia (green-blind)

#1E1B0B

Tritanopia (blue-blind)

#37030B

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310a0c;
/* rgb */ color: rgb(49, 10, 12);
/* oklch */ color: oklch(21.5% 0.063 21.3);

Tailwind

colors: {
  custom: {
    50: '#6c4c4c',
    500: '#310a0c',
    950: '#000000',
  },
}

SCSS

$custom: #310a0c;
$custom-light: #6c4c4c;
$custom-dark: #000000;

JSON

{
  "hex": "#310a0c",
  "rgb": {
    "r": 49,
    "g": 10,
    "b": 12
  },
  "hsl": {
    "h": 356.923,
    "s": 66.102,
    "l": 11.569
  },
  "oklch": {
    "l": 0.21545,
    "c": 0.06316,
    "h": 21.3
  },
  "luminance": 0.00897
}

Semantic roles & 50–950 ramp

primary

#310A0C

secondary

#296E6B

accent

#E9E03F

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310A0C

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

Preview Lab → · Contrast checker → · Palette generator →