#310A0D#310A0D

#310A0D is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.6% C 0.063 H 19.8°. Best body text is #FFFFFF at 17.80:1 contrast (WCAG AA passes).

Color values

HEX	#310A0D
RGB	rgb(49, 10, 13)
HSL	hsl(355, 66%, 12%)
HSV	hsv(355, 80%, 19%)
CMYK	cmyk(0%, 79.6%, 73.5%, 80.8%)
CIE-LAB	lab(8.12, 19.97, 7.17)
CIE-LCH	lch(8.12, 21.22, 19.74°)
OKLab	oklab(21.57% 0.0593 0.0214)
OKLCH	oklch(21.57% 0.063 19.8)
XYZ	xyz(1.4480, 0.8993, 0.4780)
Luminance	0.0090 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310A0D #0A312E

analogous

#310A21 #310A0D #311B0A

triadic

#310A0D #0D310A #0A0D31

tetradic

#310A0D #21310A #0A312E #1B0A31

square

#310A0D #21310A #0A312E #1B0A31

split-complementary

#310A0D #0A311B #0A2131

monochromatic

#190507 #190507 #310A0D #64141A #971F28

Accessibility & contrast

On white

17.80

#310A0D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310A0D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310A0D

17.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310A0D	#FFFFFF	#000000	##FFFFFF
##310A0D	1.00	17.80	1.18	17.80
#FFFFFF	17.80	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14130D

Deuteranopia (green-blind)

#1E1B0C

Tritanopia (blue-blind)

#37030B

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310a0d;
/* rgb */ color: rgb(49, 10, 13);
/* oklch */ color: oklch(21.6% 0.063 19.8);

Tailwind

colors: {
  custom: {
    50: '#6c4c4c',
    500: '#310a0d',
    950: '#000000',
  },
}

SCSS

$custom: #310a0d;
$custom-light: #6c4c4c;
$custom-dark: #000000;

JSON

{
  "hex": "#310a0d",
  "rgb": {
    "r": 49,
    "g": 10,
    "b": 13
  },
  "hsl": {
    "h": 355.385,
    "s": 66.102,
    "l": 11.569
  },
  "oklch": {
    "l": 0.21569,
    "c": 0.06308,
    "h": 19.8
  },
  "luminance": 0.00899
}

Semantic roles & 50–950 ramp

primary

#310A0D

secondary

#296E69

accent

#E9DC3F

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310A0D

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

Preview Lab → · Contrast checker → · Palette generator →