#31090C#31090C

#31090C is a very dark, moderate red. Relative luminance 0.009; OKLCH L 21.4% C 0.065 H 20.3°. Best body text is #FFFFFF at 17.87:1 contrast (WCAG AA passes).

Color values

HEX	#31090C
RGB	rgb(49, 9, 12)
HSL	hsl(356, 69%, 11%)
HSV	hsv(356, 82%, 19%)
CMYK	cmyk(0%, 81.6%, 75.5%, 80.8%)
CIE-LAB	lab(7.90, 20.42, 7.32)
CIE-LCH	lch(7.90, 21.69, 19.71°)
OKLab	oklab(21.4% 0.0605 0.0224)
OKLCH	oklch(21.4% 0.065 20.3)
XYZ	xyz(1.4308, 0.8751, 0.4413)
Luminance	0.0088 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31090C #09312E

analogous

#310920 #31090C #311A09

triadic

#31090C #0C3109 #090C31

tetradic

#31090C #203109 #09312E #1A0931

square

#31090C #203109 #09312E #1A0931

split-complementary

#31090C #09311A #092031

monochromatic

#1A0506 #1A0506 #31090C #651219 #981C25

Accessibility & contrast

On white

17.87

#31090C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#31090C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31090C

17.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31090C	#FFFFFF	#000000	##FFFFFF
##31090C	1.00	17.87	1.18	17.87
#FFFFFF	17.87	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#14120C

Deuteranopia (green-blind)

#1E1A0B

Tritanopia (blue-blind)

#37020A

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #31090c;
/* rgb */ color: rgb(49, 9, 12);
/* oklch */ color: oklch(21.4% 0.065 20.3);

Tailwind

colors: {
  custom: {
    50: '#6c4b4c',
    500: '#31090c',
    950: '#000000',
  },
}

SCSS

$custom: #31090c;
$custom-light: #6c4b4c;
$custom-dark: #000000;

JSON

{
  "hex": "#31090c",
  "rgb": {
    "r": 49,
    "g": 9,
    "b": 12
  },
  "hsl": {
    "h": 355.5,
    "s": 68.966,
    "l": 11.373
  },
  "oklch": {
    "l": 0.21398,
    "c": 0.06455,
    "h": 20.3
  },
  "luminance": 0.00875
}

Semantic roles & 50–950 ramp

primary

#31090C

secondary

#276F6A

accent

#ECDF3C

background

#F6F4F4

surface

#ECE7E7

border

#C7C3C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #31090C

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

Preview Lab → · Contrast checker → · Palette generator →