#01041B#01041B

#01041B is a very dark, muted blue. Relative luminance 0.002; OKLCH L 12.4% C 0.054 H 265.8°. Best body text is #FFFFFF at 20.30:1 contrast (WCAG AA passes).

Color values

HEX	#01041B
RGB	rgb(1, 4, 27)
HSL	hsl(233, 93%, 5%)
HSV	hsv(233, 96%, 11%)
CMYK	cmyk(96.3%, 85.2%, 0%, 89.4%)
CIE-LAB	lab(1.56, 3.68, -12.39)
CIE-LCH	lch(1.56, 12.92, 286.55°)
OKLab	oklab(12.35% -0.004 -0.0541)
OKLCH	oklch(12.35% 0.054 265.8)
XYZ	xyz(0.2537, 0.1724, 1.0566)
Luminance	0.0017 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#01041B #1B1801

analogous

#01111B #01041B #0B011B

triadic

#01041B #1B0104 #041B01

tetradic

#01041B #1B0111 #1B1801 #011B0B

square

#01041B #1B0111 #1B1801 #011B0B

split-complementary

#01041B #1B0B01 #111B01

monochromatic

#01041E #01041E #01041E #030D56 #051591

Accessibility & contrast

On white

20.30

#01041B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#01041B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #01041B

20.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##01041B	#FFFFFF	#000000	##FFFFFF
##01041B	1.00	20.30	1.03	20.30
#FFFFFF	20.30	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00071C

Deuteranopia (green-blind)

#00051B

Tritanopia (blue-blind)

#00090D

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #01041b;
/* rgb */ color: rgb(1, 4, 27);
/* oklch */ color: oklch(12.4% 0.054 265.8);

Tailwind

colors: {
  custom: {
    50: '#464857',
    500: '#01041b',
    950: '#000000',
  },
}

SCSS

$custom: #01041b;
$custom-light: #464857;
$custom-dark: #000000;

JSON

{
  "hex": "#01041b",
  "rgb": {
    "r": 1,
    "g": 4,
    "b": 27
  },
  "hsl": {
    "h": 233.077,
    "s": 92.857,
    "l": 5.49
  },
  "oklch": {
    "l": 0.12352,
    "c": 0.05425,
    "h": 265.8
  },
  "luminance": 0.00172
}

Semantic roles & 50–950 ramp

primary

#01041B

secondary

#635A15

accent

#E629FF

background

#F3F4F5

surface

#E5E6E9

border

#C1C2C5

text

#000003

muted

#767778

Preview Lab

Preview with #01041B

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

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