#310F04#310F04

#310F04 is a very dark, muted red. Relative luminance 0.010; OKLCH L 22.2% C 0.059 H 39.6°. Best body text is #FFFFFF at 17.49:1 contrast (WCAG AA passes).

Color values

HEX	#310F04
RGB	rgb(49, 15, 4)
HSL	hsl(15, 85%, 10%)
HSV	hsv(15, 92%, 19%)
CMYK	cmyk(0%, 69.4%, 91.8%, 80.8%)
CIE-LAB	lab(9.02, 16.43, 12.24)
CIE-LCH	lch(9.02, 20.49, 36.69°)
OKLab	oklab(22.19% 0.0457 0.0378)
OKLCH	oklch(22.19% 0.059 39.6)
XYZ	xyz(1.4595, 1.0036, 0.2317)
Luminance	0.0100 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310F04 #042631

analogous

#31040F #310F04 #312504

triadic

#310F04 #04310F #0F0431

tetradic

#310F04 #0F3104 #042631 #250431

square

#310F04 #0F3104 #042631 #250431

split-complementary

#310F04 #043125 #040F31

monochromatic

#1C0902 #1C0902 #310F04 #6A2009 #A2320D

Accessibility & contrast

On white

17.49

#310F04 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#310F04 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310F04

17.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310F04	#FFFFFF	#000000	##FFFFFF
##310F04	1.00	17.49	1.20	17.49
#FFFFFF	17.49	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#191503

Deuteranopia (green-blind)

#211C03

Tritanopia (blue-blind)

#37070C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #310f04;
/* rgb */ color: rgb(49, 15, 4);
/* oklch */ color: oklch(22.2% 0.059 39.6);

Tailwind

colors: {
  custom: {
    50: '#6c4e48',
    500: '#310f04',
    950: '#000000',
  },
}

SCSS

$custom: #310f04;
$custom-light: #6c4e48;
$custom-dark: #000000;

JSON

{
  "hex": "#310f04",
  "rgb": {
    "r": 49,
    "g": 15,
    "b": 4
  },
  "hsl": {
    "h": 14.667,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.22189,
    "c": 0.05933,
    "h": 39.6
  },
  "luminance": 0.01003
}

Semantic roles & 50–950 ramp

primary

#310F04

secondary

#1D5E73

accent

#C9FB2D

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070200

muted

#7A7877

Preview Lab

Preview with #310F04

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

Preview Lab → · Contrast checker → · Palette generator →