#310C03#310C03

#310C03 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.7% C 0.063 H 37.0°. Best body text is #FFFFFF at 17.73:1 contrast (WCAG AA passes).

Color values

HEX	#310C03
RGB	rgb(49, 12, 3)
HSL	hsl(12, 88%, 10%)
HSV	hsv(12, 94%, 19%)
CMYK	cmyk(0%, 75.5%, 93.9%, 80.8%)
CIE-LAB	lab(8.33, 18.12, 11.65)
CIE-LCH	lch(8.33, 21.54, 32.73°)
OKLab	oklab(21.66% 0.0505 0.0381)
OKLCH	oklch(21.66% 0.063 37)
XYZ	xyz(1.4147, 0.9227, 0.1897)
Luminance	0.0092 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310C03 #032831

analogous

#310311 #310C03 #312303

triadic

#310C03 #03310C #0C0331

tetradic

#310C03 #113103 #032831 #230331

square

#310C03 #113103 #032831 #230331

split-complementary

#310C03 #033123 #031131

monochromatic

#1D0702 #1D0702 #310C03 #6B1A07 #A4280A

Accessibility & contrast

On white

17.73

#310C03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#310C03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310C03

17.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310C03	#FFFFFF	#000000	##FFFFFF
##310C03	1.00	17.73	1.18	17.73
#FFFFFF	17.73	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171302

Deuteranopia (green-blind)

#201B02

Tritanopia (blue-blind)

#37040A

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #310c03;
/* rgb */ color: rgb(49, 12, 3);
/* oklch */ color: oklch(21.7% 0.063 37.0);

Tailwind

colors: {
  custom: {
    50: '#6c4d48',
    500: '#310c03',
    950: '#000000',
  },
}

SCSS

$custom: #310c03;
$custom-light: #6c4d48;
$custom-dark: #000000;

JSON

{
  "hex": "#310c03",
  "rgb": {
    "r": 49,
    "g": 12,
    "b": 3
  },
  "hsl": {
    "h": 11.739,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.21661,
    "c": 0.06328,
    "h": 37
  },
  "luminance": 0.00922
}

Semantic roles & 50–950 ramp

primary

#310C03

secondary

#1B6374

accent

#D5FF29

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310C03

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

Preview Lab → · Contrast checker → · Palette generator →