#310D04#310D04

#310D04 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.8% C 0.062 H 36.7°. Best body text is #FFFFFF at 17.65:1 contrast (WCAG AA passes).

Color values

HEX	#310D04
RGB	rgb(49, 13, 4)
HSL	hsl(12, 85%, 10%)
HSV	hsv(12, 92%, 19%)
CMYK	cmyk(0%, 73.5%, 91.8%, 80.8%)
CIE-LAB	lab(8.57, 17.62, 11.58)
CIE-LCH	lch(8.57, 21.09, 33.32°)
OKLab	oklab(21.85% 0.0494 0.0369)
OKLCH	oklch(21.85% 0.062 36.7)
XYZ	xyz(1.4326, 0.9498, 0.2227)
Luminance	0.0095 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310D04 #042831

analogous

#310411 #310D04 #312304

triadic

#310D04 #04310D #0D0431

tetradic

#310D04 #113104 #042831 #230431

square

#310D04 #113104 #042831 #230431

split-complementary

#310D04 #043123 #041131

monochromatic

#1C0802 #1C0802 #310D04 #6A1C09 #A22B0D

Accessibility & contrast

On white

17.65

#310D04 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310D04 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310D04

17.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310D04	#FFFFFF	#000000	##FFFFFF
##310D04	1.00	17.65	1.19	17.65
#FFFFFF	17.65	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171403

Deuteranopia (green-blind)

#201C03

Tritanopia (blue-blind)

#37050B

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #310d04;
/* rgb */ color: rgb(49, 13, 4);
/* oklch */ color: oklch(21.8% 0.062 36.7);

Tailwind

colors: {
  custom: {
    50: '#6c4d48',
    500: '#310d04',
    950: '#000000',
  },
}

SCSS

$custom: #310d04;
$custom-light: #6c4d48;
$custom-dark: #000000;

JSON

{
  "hex": "#310d04",
  "rgb": {
    "r": 49,
    "g": 13,
    "b": 4
  },
  "hsl": {
    "h": 12,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.21845,
    "c": 0.06161,
    "h": 36.7
  },
  "luminance": 0.0095
}

Semantic roles & 50–950 ramp

primary

#310D04

secondary

#1D6273

accent

#D2FB2D

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310D04

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

Preview Lab → · Contrast checker → · Palette generator →