#310509#310509

#310509 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.7% C 0.071 H 20.4°. Best body text is #FFFFFF at 18.16:1 contrast (WCAG AA passes).

Color values

HEX	#310509
RGB	rgb(49, 5, 9)
HSL	hsl(355, 81%, 11%)
HSV	hsv(355, 90%, 19%)
CMYK	cmyk(0%, 89.8%, 81.6%, 80.8%)
CIE-LAB	lab(7.06, 22.31, 7.35)
CIE-LCH	lch(7.06, 23.48, 18.23°)
OKLab	oklab(20.72% 0.0663 0.0247)
OKLCH	oklch(20.72% 0.071 20.4)
XYZ	xyz(1.3704, 0.7814, 0.3371)
Luminance	0.0078 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310509 #05312D

analogous

#31051F #310509 #311705

triadic

#310509 #093105 #050931

tetradic

#310509 #1F3105 #05312D #170531

square

#310509 #1F3105 #05312D #170531

split-complementary

#310509 #053117 #051F31

monochromatic

#1C0305 #1C0305 #310509 #690B13 #A0101D

Accessibility & contrast

On white

18.16

#310509 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.16

#310509 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310509

18.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310509	#FFFFFF	#000000	##FFFFFF
##310509	1.00	18.16	1.16	18.16
#FFFFFF	18.16	1.00	21.00	1.00
#000000	1.16	21.00	1.00	21.00
##FFFFFF	18.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#111009

Deuteranopia (green-blind)

#1D1908

Tritanopia (blue-blind)

#370007

Achromatopsia (no color)

#161616

Design tokens & code

CSS

--color: #310509;
/* rgb */ color: rgb(49, 5, 9);
/* oklch */ color: oklch(20.7% 0.071 20.4);

Tailwind

colors: {
  custom: {
    50: '#6d494b',
    500: '#310509',
    950: '#000000',
  },
}

SCSS

$custom: #310509;
$custom-light: #6d494b;
$custom-dark: #000000;

JSON

{
  "hex": "#310509",
  "rgb": {
    "r": 49,
    "g": 5,
    "b": 9
  },
  "hsl": {
    "h": 354.545,
    "s": 81.481,
    "l": 10.588
  },
  "oklch": {
    "l": 0.20719,
    "c": 0.07074,
    "h": 20.4
  },
  "luminance": 0.00781
}

Semantic roles & 50–950 ramp

primary

#310509

secondary

#1F726B

accent

#F8E630

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310509

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

Preview Lab → · Contrast checker → · Palette generator →