#310D03#310D03

#310D03 is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.8% C 0.062 H 38.3°. Best body text is #FFFFFF at 17.66:1 contrast (WCAG AA passes).

Color values

HEX	#310D03
RGB	rgb(49, 13, 3)
HSL	hsl(13, 88%, 10%)
HSV	hsv(13, 94%, 19%)
CMYK	cmyk(0%, 73.5%, 93.9%, 80.8%)
CIE-LAB	lab(8.55, 17.54, 11.96)
CIE-LCH	lch(8.55, 21.23, 34.29°)
OKLab	oklab(21.83% 0.0488 0.0385)
OKLCH	oklch(21.83% 0.062 38.3)
XYZ	xyz(1.4271, 0.9476, 0.1939)
Luminance	0.0095 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310D03 #032731

analogous

#310310 #310D03 #312403

triadic

#310D03 #03310D #0D0331

tetradic

#310D03 #103103 #032731 #240331

square

#310D03 #103103 #032731 #240331

split-complementary

#310D03 #033124 #031031

monochromatic

#1D0802 #1D0802 #310D03 #6B1C07 #A42C0A

Accessibility & contrast

On white

17.66

#310D03 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#310D03 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310D03

17.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310D03	#FFFFFF	#000000	##FFFFFF
##310D03	1.00	17.66	1.19	17.66
#FFFFFF	17.66	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#171402

Deuteranopia (green-blind)

#201C02

Tritanopia (blue-blind)

#37050B

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #310d03;
/* rgb */ color: rgb(49, 13, 3);
/* oklch */ color: oklch(21.8% 0.062 38.3);

Tailwind

colors: {
  custom: {
    50: '#6c4d48',
    500: '#310d03',
    950: '#000000',
  },
}

SCSS

$custom: #310d03;
$custom-light: #6c4d48;
$custom-dark: #000000;

JSON

{
  "hex": "#310d03",
  "rgb": {
    "r": 49,
    "g": 13,
    "b": 3
  },
  "hsl": {
    "h": 13.043,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.21825,
    "c": 0.06214,
    "h": 38.3
  },
  "luminance": 0.00947
}

Semantic roles & 50–950 ramp

primary

#310D03

secondary

#1B6174

accent

#D0FF29

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310D03

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

Preview Lab → · Contrast checker → · Palette generator →