#01011F#01011F

#01011F is a very dark, moderate blue. Relative luminance 0.001; OKLCH L 11.6% C 0.070 H 268.3°. Best body text is #FFFFFF at 20.48:1 contrast (WCAG AA passes).

Color values

HEX	#01011F
RGB	rgb(1, 1, 31)
HSL	hsl(240, 94%, 6%)
HSV	hsv(240, 97%, 12%)
CMYK	cmyk(96.8%, 96.8%, 0%, 87.8%)
CIE-LAB	lab(1.15, 6.14, -16.22)
CIE-LCH	lch(1.15, 17.34, 290.72°)
OKLab	oklab(11.57% -0.0021 -0.0698)
OKLCH	oklch(11.57% 0.07 268.3)
XYZ	xyz(0.2706, 0.1271, 1.3063)
Luminance	0.0013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.90

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#01011F #1F1F01

analogous

#01101F #01011F #10011F

triadic

#01011F #1F0101 #011F01

tetradic

#01011F #1F0110 #1F1F01 #011F10

square

#01011F #1F0110 #1F1F01 #011F10

split-complementary

#01011F #1F1001 #101F01

monochromatic

#01011E #01011E #01011F #03035A #050596

Accessibility & contrast

On white

20.48

#01011F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#01011F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #01011F

20.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##01011F	#FFFFFF	#000000	##FFFFFF
##01011F	1.00	20.48	1.03	20.48
#FFFFFF	20.48	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.48	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: #01011f;
/* rgb */ color: rgb(1, 1, 31);
/* oklch */ color: oklch(11.6% 0.070 268.3);

Tailwind

colors: {
  custom: {
    50: '#46475a',
    500: '#01011f',
    950: '#000000',
  },
}

SCSS

$custom: #01011f;
$custom-light: #46475a;
$custom-dark: #000000;

JSON

{
  "hex": "#01011f",
  "rgb": {
    "r": 1,
    "g": 1,
    "b": 31
  },
  "hsl": {
    "h": 240,
    "s": 93.75,
    "l": 6.275
  },
  "oklch": {
    "l": 0.11566,
    "c": 0.06985,
    "h": 268.3
  },
  "luminance": 0.00127
}

Semantic roles & 50–950 ramp

primary

#01011F

secondary

#676715

accent

#FF29FF

background

#F4F3F5

surface

#E6E5E9

border

#C2C1C5

text

#000004

muted

#777779

Preview Lab

Preview with #01011F

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

Preview Lab → · Contrast checker → · Palette generator →