#000A1F#000A1F

#000A1F is a very dark, muted blue. Relative luminance 0.003; OKLCH L 14.8% C 0.050 H 255.7°. Best body text is #FFFFFF at 19.75:1 contrast (WCAG AA passes).

Color values

HEX	#000A1F
RGB	rgb(0, 10, 31)
HSL	hsl(221, 100%, 6%)
HSV	hsv(221, 100%, 12%)
CMYK	cmyk(100%, 67.7%, 0%, 87.8%)
CIE-LAB	lab(2.85, 2.27, -13.65)
CIE-LCH	lch(2.85, 13.84, 279.45°)
OKLab	oklab(14.8% -0.0123 -0.0485)
OKLCH	oklch(14.8% 0.05 255.7)
XYZ	xyz(0.3558, 0.3160, 1.3383)
Luminance	0.0032 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#000A1F #1F1500

analogous

#00191F #000A1F #05001F

triadic

#000A1F #1F000A #0A1F00

tetradic

#000A1F #1F0019 #1F1500 #001F05

square

#000A1F #1F0019 #1F1500 #001F05

split-complementary

#000A1F #1F0500 #191F00

monochromatic

#000A1F #000A1F #000A1F #001E5C #003199

Accessibility & contrast

On white

19.75

#000A1F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.06

#000A1F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #000A1F

19.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##000A1F	#FFFFFF	#000000	##FFFFFF
##000A1F	1.00	19.75	1.06	19.75
#FFFFFF	19.75	1.00	21.00	1.00
#000000	1.06	21.00	1.00	21.00
##FFFFFF	19.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#010C20

Deuteranopia (green-blind)

#00091F

Tritanopia (blue-blind)

#000F12

Achromatopsia (no color)

#0A0A0A

Design tokens & code

CSS

--color: #000a1f;
/* rgb */ color: rgb(0, 10, 31);
/* oklch */ color: oklch(14.8% 0.050 255.7);

Tailwind

colors: {
  custom: {
    50: '#464b5a',
    500: '#000a1f',
    950: '#000000',
  },
}

SCSS

$custom: #000a1f;
$custom-light: #464b5a;
$custom-dark: #000000;

JSON

{
  "hex": "#000a1f",
  "rgb": {
    "r": 0,
    "g": 10,
    "b": 31
  },
  "hsl": {
    "h": 220.645,
    "s": 100,
    "l": 6.078
  },
  "oklch": {
    "l": 0.14797,
    "c": 0.05002,
    "h": 255.7
  },
  "luminance": 0.00316
}

Semantic roles & 50–950 ramp

primary

#000A1F

secondary

#684D12

accent

#BA29FF

background

#F3F4F5

surface

#E5E7E9

border

#C1C3C5

text

#000104

muted

#767779

Preview Lab

Preview with #000A1F

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

Preview Lab → · Contrast checker → · Palette generator →