#00011F#00011F

#00011F is a very dark, moderate blue. Relative luminance 0.001; OKLCH L 11.4% C 0.071 H 264.2°. Best body text is #FFFFFF at 20.50:1 contrast (WCAG AA passes).

Color values

HEX	#00011F
RGB	rgb(0, 1, 31)
HSL	hsl(238, 100%, 6%)
HSV	hsv(238, 100%, 12%)
CMYK	cmyk(100%, 96.8%, 0%, 87.8%)
CIE-LAB	lab(1.09, 5.88, -16.31)
CIE-LCH	lch(1.09, 17.34, 289.81°)
OKLab	oklab(11.35% -0.0072 -0.0709)
OKLCH	oklch(11.35% 0.071 264.2)
XYZ	xyz(0.2581, 0.1206, 1.3057)
Luminance	0.0012 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.88

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00011F #1F1E00

analogous

#00101F #00011F #0E001F

triadic

#00011F #1F0001 #011F00

tetradic

#00011F #1F0010 #1F1E00 #001F0E

square

#00011F #1F0010 #1F1E00 #001F0E

split-complementary

#00011F #1F0E00 #101F00

monochromatic

#00011F #00011F #00011F #00035C #000599

Accessibility & contrast

On white

20.50

#00011F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.02

#00011F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00011F

20.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00011F	#FFFFFF	#000000	##FFFFFF
##00011F	1.00	20.50	1.02	20.50
#FFFFFF	20.50	1.00	21.00	1.00
#000000	1.02	21.00	1.00	21.00
##FFFFFF	20.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000520

Deuteranopia (green-blind)

#00031E

Tritanopia (blue-blind)

#00080E

Achromatopsia (no color)

#040404

Design tokens & code

CSS

--color: #00011f;
/* rgb */ color: rgb(0, 1, 31);
/* oklch */ color: oklch(11.4% 0.071 264.2);

Tailwind

colors: {
  custom: {
    50: '#46475a',
    500: '#00011f',
    950: '#000000',
  },
}

SCSS

$custom: #00011f;
$custom-light: #46475a;
$custom-dark: #000000;

JSON

{
  "hex": "#00011f",
  "rgb": {
    "r": 0,
    "g": 1,
    "b": 31
  },
  "hsl": {
    "h": 238.065,
    "s": 100,
    "l": 6.078
  },
  "oklch": {
    "l": 0.11354,
    "c": 0.0713,
    "h": 264.2
  },
  "luminance": 0.00121
}

Semantic roles & 50–950 ramp

primary

#00011F

secondary

#686612

accent

#F829FF

background

#F3F3F5

surface

#E5E5E9

border

#C1C1C5

text

#000004

muted

#767779

Preview Lab

Preview with #00011F

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

Preview Lab → · Contrast checker → · Palette generator →