#010023#010023

#010023 is a very dark, moderate blue. Relative luminance 0.001; OKLCH L 11.8% C 0.079 H 267.8°. Best body text is #FFFFFF at 20.48:1 contrast (WCAG AA passes).

Color values

HEX	#010023
RGB	rgb(1, 0, 35)
HSL	hsl(242, 100%, 7%)
HSV	hsv(242, 100%, 14%)
CMYK	cmyk(97.1%, 100%, 0%, 86.3%)
CIE-LAB	lab(1.15, 7.96, -19.39)
CIE-LCH	lch(1.15, 20.96, 292.32°)
OKLab	oklab(11.78% -0.003 -0.0787)
OKLCH	oklch(11.78% 0.079 267.8)
XYZ	xyz(0.3158, 0.1278, 1.5978)
Luminance	0.0013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#010023 #222300

analogous

#001123 #010023 #130023

triadic

#010023 #230100 #002301

tetradic

#010023 #230011 #222300 #002313

square

#010023 #230011 #222300 #002313

split-complementary

#010023 #231300 #112300

monochromatic

#01001F #01001F #010023 #030060 #04009D

Accessibility & contrast

On white

20.48

#010023 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#010023 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #010023

20.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##010023	#FFFFFF	#000000	##FFFFFF
##010023	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)

#000624

Deuteranopia (green-blind)

#000322

Tritanopia (blue-blind)

#000810

Achromatopsia (no color)

#040404

Design tokens & code

CSS

--color: #010023;
/* rgb */ color: rgb(1, 0, 35);
/* oklch */ color: oklch(11.8% 0.079 267.8);

Tailwind

colors: {
  custom: {
    50: '#46475e',
    500: '#010023',
    950: '#000000',
  },
}

SCSS

$custom: #010023;
$custom-light: #46475e;
$custom-dark: #000000;

JSON

{
  "hex": "#010023",
  "rgb": {
    "r": 1,
    "g": 0,
    "b": 35
  },
  "hsl": {
    "h": 241.714,
    "s": 100,
    "l": 6.863
  },
  "oklch": {
    "l": 0.11784,
    "c": 0.07878,
    "h": 267.8
  },
  "luminance": 0.00128
}

Semantic roles & 50–950 ramp

primary

#010023

secondary

#696C13

accent

#FF29F9

background

#F4F3F5

surface

#E6E5E9

border

#C2C1C5

text

#000004

muted

#777779

Preview Lab

Preview with #010023

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

Preview Lab → · Contrast checker → · Palette generator →