#31030A#31030A

#31030A is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.4% C 0.074 H 17.2°. Best body text is #FFFFFF at 18.29:1 contrast (WCAG AA passes).

Color values

HEX	#31030A
RGB	rgb(49, 3, 10)
HSL	hsl(351, 88%, 10%)
HSV	hsv(351, 94%, 19%)
CMYK	cmyk(0%, 93.9%, 79.6%, 80.8%)
CIE-LAB	lab(6.69, 23.43, 6.40)
CIE-LCH	lch(6.69, 24.28, 15.27°)
OKLab	oklab(20.42% 0.0707 0.0219)
OKLCH	oklch(20.42% 0.074 17.2)
XYZ	xyz(1.3541, 0.7402, 0.3587)
Luminance	0.0074 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31030A #03312A

analogous

#310321 #31030A #311303

triadic

#31030A #0A3103 #030A31

tetradic

#31030A #213103 #03312A #130331

square

#31030A #213103 #03312A #130331

split-complementary

#31030A #033113 #032131

monochromatic

#1D0206 #1D0206 #31030A #6B0716 #A40A22

Accessibility & contrast

On white

18.29

#31030A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#31030A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31030A

18.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31030A	#FFFFFF	#000000	##FFFFFF
##31030A	1.00	18.29	1.15	18.29
#FFFFFF	18.29	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#100E0A

Deuteranopia (green-blind)

#1C1809

Tritanopia (blue-blind)

#370006

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #31030a;
/* rgb */ color: rgb(49, 3, 10);
/* oklch */ color: oklch(20.4% 0.074 17.2);

Tailwind

colors: {
  custom: {
    50: '#6d484b',
    500: '#31030a',
    950: '#000000',
  },
}

SCSS

$custom: #31030a;
$custom-light: #6d484b;
$custom-dark: #000000;

JSON

{
  "hex": "#31030a",
  "rgb": {
    "r": 49,
    "g": 3,
    "b": 10
  },
  "hsl": {
    "h": 350.87,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.20421,
    "c": 0.07403,
    "h": 17.2
  },
  "luminance": 0.0074
}

Semantic roles & 50–950 ramp

primary

#31030A

secondary

#1B7467

accent

#FFDE29

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #31030A

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

Preview Lab → · Contrast checker → · Palette generator →