#310409#310409

#310409 is a very dark, moderate red. Relative luminance 0.008; OKLCH L 20.6% C 0.072 H 19.4°. Best body text is #FFFFFF at 18.23:1 contrast (WCAG AA passes).

Color values

HEX	#310409
RGB	rgb(49, 4, 9)
HSL	hsl(353, 85%, 10%)
HSV	hsv(353, 92%, 19%)
CMYK	cmyk(0%, 91.8%, 81.6%, 80.8%)
CIE-LAB	lab(6.86, 22.83, 7.06)
CIE-LCH	lch(6.86, 23.89, 17.19°)
OKLab	oklab(20.56% 0.0682 0.0241)
OKLCH	oklch(20.56% 0.072 19.4)
XYZ	xyz(1.3595, 0.7597, 0.3335)
Luminance	0.0076 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310409 #04312C

analogous

#31041F #310409 #311504

triadic

#310409 #093104 #040931

tetradic

#310409 #1F3104 #04312C #150431

square

#310409 #1F3104 #04312C #150431

split-complementary

#310409 #043115 #041F31

monochromatic

#1C0205 #1C0205 #310409 #6A0913 #A20D1E

Accessibility & contrast

On white

18.23

#310409 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310409 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310409

18.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310409	#FFFFFF	#000000	##FFFFFF
##310409	1.00	18.23	1.15	18.23
#FFFFFF	18.23	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#110F09

Deuteranopia (green-blind)

#1C1908

Tritanopia (blue-blind)

#370006

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310409;
/* rgb */ color: rgb(49, 4, 9);
/* oklch */ color: oklch(20.6% 0.072 19.4);

Tailwind

colors: {
  custom: {
    50: '#6d484b',
    500: '#310409',
    950: '#000000',
  },
}

SCSS

$custom: #310409;
$custom-light: #6d484b;
$custom-dark: #000000;

JSON

{
  "hex": "#310409",
  "rgb": {
    "r": 49,
    "g": 4,
    "b": 9
  },
  "hsl": {
    "h": 353.333,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.20559,
    "c": 0.07235,
    "h": 19.4
  },
  "luminance": 0.0076
}

Semantic roles & 50–950 ramp

primary

#310409

secondary

#1D736A

accent

#FBE42D

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070101

muted

#7A7777

Preview Lab

Preview with #310409

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

Preview Lab → · Contrast checker → · Palette generator →