#310505#310505

#310505 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.6% C 0.071 H 26.1°. Best body text is #FFFFFF at 18.19:1 contrast (WCAG AA passes).

Color values

HEX	#310505
RGB	rgb(49, 5, 5)
HSL	hsl(0, 81%, 11%)
HSV	hsv(0, 90%, 19%)
CMYK	cmyk(0%, 89.8%, 89.8%, 80.8%)
CIE-LAB	lab(6.98, 21.99, 8.86)
CIE-LCH	lch(6.98, 23.71, 21.95°)
OKLab	oklab(20.63% 0.064 0.0314)
OKLCH	oklch(20.63% 0.071 26.1)
XYZ	xyz(1.3484, 0.7727, 0.2217)
Luminance	0.0077 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310505 #053131

analogous

#31051B #310505 #311B05

triadic

#310505 #053105 #050531

tetradic

#310505 #1B3105 #053131 #1B0531

square

#310505 #1B3105 #053131 #1B0531

split-complementary

#310505 #05311B #051B31

monochromatic

#1C0303 #1C0303 #310505 #690B0B #A01010

Accessibility & contrast

On white

18.19

#310505 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310505 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310505

18.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310505	#FFFFFF	#000000	##FFFFFF
##310505	1.00	18.19	1.15	18.19
#FFFFFF	18.19	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#120F05

Deuteranopia (green-blind)

#1D1904

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310505;
/* rgb */ color: rgb(49, 5, 5);
/* oklch */ color: oklch(20.6% 0.071 26.1);

Tailwind

colors: {
  custom: {
    50: '#6d4949',
    500: '#310505',
    950: '#000000',
  },
}

SCSS

$custom: #310505;
$custom-light: #6d4949;
$custom-dark: #000000;

JSON

{
  "hex": "#310505",
  "rgb": {
    "r": 49,
    "g": 5,
    "b": 5
  },
  "hsl": {
    "h": 0,
    "s": 81.481,
    "l": 10.588
  },
  "oklch": {
    "l": 0.20627,
    "c": 0.07131,
    "h": 26.1
  },
  "luminance": 0.00772
}

Semantic roles & 50–950 ramp

primary

#310505

secondary

#1F7272

accent

#F8F830

background

#F6F4F4

surface

#ECE7E6

border

#C7C3C2

text

#070100

muted

#7A7777

Preview Lab

Preview with #310505

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

Preview Lab → · Contrast checker → · Palette generator →