#310109#310109

#310109 is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.1% C 0.078 H 16.6°. Best body text is #FFFFFF at 18.44:1 contrast (WCAG AA passes).

Color values

HEX	#310109
RGB	rgb(49, 1, 9)
HSL	hsl(350, 96%, 10%)
HSV	hsv(350, 98%, 19%)
CMYK	cmyk(0%, 98%, 81.6%, 80.8%)
CIE-LAB	lab(6.27, 24.38, 6.20)
CIE-LCH	lch(6.27, 25.16, 14.27°)
OKLab	oklab(20.06% 0.0744 0.0222)
OKLCH	oklch(20.06% 0.078 16.6)
XYZ	xyz(1.3269, 0.6946, 0.3226)
Luminance	0.0069 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310109 #013129

analogous

#310121 #310109 #311101

triadic

#310109 #093101 #010931

tetradic

#310109 #213101 #013129 #110131

square

#310109 #213101 #013129 #110131

split-complementary

#310109 #013111 #012131

monochromatic

#1E0106 #1E0106 #310109 #6D0214 #A9031F

Accessibility & contrast

On white

18.44

#310109 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#310109 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310109

18.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310109	#FFFFFF	#000000	##FFFFFF
##310109	1.00	18.44	1.14	18.44
#FFFFFF	18.44	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0E0D09

Deuteranopia (green-blind)

#1B1808

Tritanopia (blue-blind)

#370004

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #310109;
/* rgb */ color: rgb(49, 1, 9);
/* oklch */ color: oklch(20.1% 0.078 16.6);

Tailwind

colors: {
  custom: {
    50: '#6d474b',
    500: '#310109',
    950: '#000000',
  },
}

SCSS

$custom: #310109;
$custom-light: #6d474b;
$custom-dark: #000000;

JSON

{
  "hex": "#310109",
  "rgb": {
    "r": 49,
    "g": 1,
    "b": 9
  },
  "hsl": {
    "h": 350,
    "s": 96,
    "l": 9.804
  },
  "oklch": {
    "l": 0.20064,
    "c": 0.07764,
    "h": 16.6
  },
  "luminance": 0.00694
}

Semantic roles & 50–950 ramp

primary

#310109

secondary

#177767

accent

#FFDB29

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #310109

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

Preview Lab → · Contrast checker → · Palette generator →