#01040F#01040F

#01040F is a very dark, muted blue. Relative luminance 0.001; OKLCH L 10.9% C 0.031 H 260.7°. Best body text is #FFFFFF at 20.48:1 contrast (WCAG AA passes).

Color values

HEX	#01040F
RGB	rgb(1, 4, 15)
HSL	hsl(227, 88%, 3%)
HSV	hsv(227, 93%, 6%)
CMYK	cmyk(93.3%, 73.3%, 0%, 94.1%)
CIE-LAB	lab(1.15, 0.85, -4.72)
CIE-LCH	lch(1.15, 4.79, 280.16°)
OKLab	oklab(10.95% -0.0051 -0.0311)
OKLCH	oklch(10.95% 0.031 260.7)
XYZ	xyz(0.1421, 0.1278, 0.4690)
Luminance	0.0013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#01040F #0F0C01

analogous

#010B0F #01040F #05010F

triadic

#01040F #0F0104 #040F01

tetradic

#01040F #0F010B #0F0C01 #010F05

square

#01040F #0F010B #0F0C01 #010F05

split-complementary

#01040F #0F0501 #0B0F01

monochromatic

#02081D #02081D #02081D #051348 #092382

Accessibility & contrast

On white

20.48

#01040F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#01040F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #01040F

20.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##01040F	#FFFFFF	#000000	##FFFFFF
##01040F	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)

#01050F

Deuteranopia (green-blind)

#00040F

Tritanopia (blue-blind)

#000608

Achromatopsia (no color)

#040404

Design tokens & code

CSS

--color: #01040f;
/* rgb */ color: rgb(1, 4, 15);
/* oklch */ color: oklch(10.9% 0.031 260.7);

Tailwind

colors: {
  custom: {
    50: '#47484e',
    500: '#01040f',
    950: '#000000',
  },
}

SCSS

$custom: #01040f;
$custom-light: #47484e;
$custom-dark: #000000;

JSON

{
  "hex": "#01040f",
  "rgb": {
    "r": 1,
    "g": 4,
    "b": 15
  },
  "hsl": {
    "h": 227.143,
    "s": 87.5,
    "l": 3.137
  },
  "oklch": {
    "l": 0.10945,
    "c": 0.03149,
    "h": 260.7
  },
  "luminance": 0.00128
}

Semantic roles & 50–950 ramp

primary

#01040F

secondary

#574915

accent

#D02AFE

background

#F3F4F4

surface

#E5E6E7

border

#C1C2C3

text

#000001

muted

#777777

Preview Lab

Preview with #01040F

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

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