#310308#310308

#310308 is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.4% C 0.074 H 19.8°. Best body text is #FFFFFF at 18.31:1 contrast (WCAG AA passes).

Color values

HEX	#310308
RGB	rgb(49, 3, 8)
HSL	hsl(353, 88%, 10%)
HSV	hsv(353, 94%, 19%)
CMYK	cmyk(0%, 93.9%, 83.7%, 80.8%)
CIE-LAB	lab(6.65, 23.27, 7.15)
CIE-LCH	lch(6.65, 24.35, 17.09°)
OKLab	oklab(20.37% 0.0697 0.0251)
OKLCH	oklch(20.37% 0.074 19.8)
XYZ	xyz(1.3432, 0.7358, 0.3010)
Luminance	0.0074 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#310308 #03312C

analogous

#31031F #310308 #311503

triadic

#310308 #083103 #030831

tetradic

#310308 #1F3103 #03312C #150331

square

#310308 #1F3103 #03312C #150331

split-complementary

#310308 #033115 #031F31

monochromatic

#1D0205 #1D0205 #310308 #6B0711 #A40A1B

Accessibility & contrast

On white

18.31

#310308 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#310308 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #310308

18.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##310308	#FFFFFF	#000000	##FFFFFF
##310308	1.00	18.31	1.15	18.31
#FFFFFF	18.31	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.31	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#100E08

Deuteranopia (green-blind)

#1C1807

Tritanopia (blue-blind)

#370005

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #310308;
/* rgb */ color: rgb(49, 3, 8);
/* oklch */ color: oklch(20.4% 0.074 19.8);

Tailwind

colors: {
  custom: {
    50: '#6d484a',
    500: '#310308',
    950: '#000000',
  },
}

SCSS

$custom: #310308;
$custom-light: #6d484a;
$custom-dark: #000000;

JSON

{
  "hex": "#310308",
  "rgb": {
    "r": 49,
    "g": 3,
    "b": 8
  },
  "hsl": {
    "h": 353.478,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.20373,
    "c": 0.07408,
    "h": 19.8
  },
  "luminance": 0.00736
}

Semantic roles & 50–950 ramp

primary

#310308

secondary

#1B746B

accent

#FFE729

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #310308

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

Preview Lab → · Contrast checker → · Palette generator →