#01001D#01001D

#01001D is a very dark, moderate blue. Relative luminance 0.001; OKLCH L 10.7% C 0.071 H 269.1°. Best body text is #FFFFFF at 20.61:1 contrast (WCAG AA passes).

Color values

HEX	#01001D
RGB	rgb(1, 0, 29)
HSL	hsl(242, 100%, 6%)
HSV	hsv(242, 100%, 11%)
CMYK	cmyk(96.6%, 100%, 0%, 88.6%)
CIE-LAB	lab(0.86, 5.89, -15.04)
CIE-LCH	lch(0.86, 16.16, 291.38°)
OKLab	oklab(10.68% -0.0011 -0.0706)
OKLCH	oklch(10.68% 0.071 269.1)
XYZ	xyz(0.2342, 0.0951, 1.1682)
Luminance	0.0009 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.63

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#01001D #1C1D00

analogous

#000D1D #01001D #0F001D

triadic

#01001D #1D0100 #001D01

tetradic

#01001D #1D000D #1C1D00 #001D0F

square

#01001D #1D000D #1C1D00 #001D0F

split-complementary

#01001D #1D0F00 #0D1D00

monochromatic

#01001F #01001F #01001F #03005A #050097

Accessibility & contrast

On white

20.61

#01001D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.02

#01001D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #01001D

20.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##01001D	#FFFFFF	#000000	##FFFFFF
##01001D	1.00	20.61	1.02	20.61
#FFFFFF	20.61	1.00	21.00	1.00
#000000	1.02	21.00	1.00	21.00
##FFFFFF	20.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00041E

Deuteranopia (green-blind)

#00021C

Tritanopia (blue-blind)

#00060C

Achromatopsia (no color)

#030303

Design tokens & code

CSS

--color: #01001d;
/* rgb */ color: rgb(1, 0, 29);
/* oklch */ color: oklch(10.7% 0.071 269.1);

Tailwind

colors: {
  custom: {
    50: '#464758',
    500: '#01001d',
    950: '#000000',
  },
}

SCSS

$custom: #01001d;
$custom-light: #464758;
$custom-dark: #000000;

JSON

{
  "hex": "#01001d",
  "rgb": {
    "r": 1,
    "g": 0,
    "b": 29
  },
  "hsl": {
    "h": 242.069,
    "s": 100,
    "l": 5.686
  },
  "oklch": {
    "l": 0.10681,
    "c": 0.07057,
    "h": 269.1
  },
  "luminance": 0.00095
}

Semantic roles & 50–950 ramp

primary

#01001D

secondary

#646712

accent

#FF29F8

background

#F3F3F5

surface

#E5E5E9

border

#C1C1C5

text

#000003

muted

#767778

Preview Lab

Preview with #01001D

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

Preview Lab → · Contrast checker → · Palette generator →