#31030D#31030D

#31030D is a very dark, moderate red. Relative luminance 0.007; OKLCH L 20.5% C 0.074 H 13.2°. Best body text is #FFFFFF at 18.27:1 contrast (WCAG AA passes).

Color values

HEX	#31030D
RGB	rgb(49, 3, 13)
HSL	hsl(347, 88%, 10%)
HSV	hsv(347, 94%, 19%)
CMYK	cmyk(0%, 93.9%, 73.5%, 80.8%)
CIE-LAB	lab(6.75, 23.68, 5.16)
CIE-LCH	lch(6.75, 24.23, 12.31°)
OKLab	oklab(20.5% 0.0722 0.017)
OKLCH	oklch(20.5% 0.074 13.2)
XYZ	xyz(1.3720, 0.7474, 0.4527)
Luminance	0.0075 (WCAG relative)
Temperature	warm
Family	red

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#31030D #033127

analogous

#310324 #31030D #311003

triadic

#31030D #0D3103 #030D31

tetradic

#31030D #243103 #033127 #100331

square

#31030D #243103 #033127 #100331

split-complementary

#31030D #033110 #032431

monochromatic

#1D0208 #1D0208 #31030D #6B071C #A40A2C

Accessibility & contrast

On white

18.27

#31030D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#31030D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #31030D

18.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##31030D	#FFFFFF	#000000	##FFFFFF
##31030D	1.00	18.27	1.15	18.27
#FFFFFF	18.27	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F0F0D

Deuteranopia (green-blind)

#1B180C

Tritanopia (blue-blind)

#370007

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #31030d;
/* rgb */ color: rgb(49, 3, 13);
/* oklch */ color: oklch(20.5% 0.074 13.2);

Tailwind

colors: {
  custom: {
    50: '#6d484d',
    500: '#31030d',
    950: '#000000',
  },
}

SCSS

$custom: #31030d;
$custom-light: #6d484d;
$custom-dark: #000000;

JSON

{
  "hex": "#31030d",
  "rgb": {
    "r": 49,
    "g": 3,
    "b": 13
  },
  "hsl": {
    "h": 346.957,
    "s": 88.462,
    "l": 10.196
  },
  "oklch": {
    "l": 0.20497,
    "c": 0.07418,
    "h": 13.2
  },
  "luminance": 0.00747
}

Semantic roles & 50–950 ramp

primary

#31030D

secondary

#1B7461

accent

#FFD029

background

#F6F4F4

surface

#ECE6E7

border

#C7C2C3

text

#070001

muted

#7A7777

Preview Lab

Preview with #31030D

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

Preview Lab → · Contrast checker → · Palette generator →