#040223#040223

#040223 is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 13.2% C 0.070 H 275.6°. Best body text is #FFFFFF at 20.23:1 contrast (WCAG AA passes).

Color values

HEX	#040223
RGB	rgb(4, 2, 35)
HSL	hsl(244, 89%, 7%)
HSV	hsv(244, 94%, 14%)
CMYK	cmyk(88.6%, 94.3%, 0%, 86.3%)
CIE-LAB	lab(1.72, 7.95, -18.50)
CIE-LCH	lch(1.72, 20.14, 293.25°)
OKLab	oklab(13.15% 0.0069 -0.0701)
OKLCH	oklch(13.15% 0.07 275.6)
XYZ	xyz(0.3751, 0.1905, 1.6068)
Luminance	0.0019 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040223 #212302

analogous

#021123 #040223 #150223

triadic

#040223 #230402 #022304

tetradic

#040223 #230211 #212302 #022315

square

#040223 #230211 #212302 #022315

split-complementary

#040223 #231502 #112302

monochromatic

#03021D #03021D #040223 #0B055D #110997

Accessibility & contrast

On white

20.23

#040223 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.04

#040223 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040223

20.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040223	#FFFFFF	#000000	##FFFFFF
##040223	1.00	20.23	1.04	20.23
#FFFFFF	20.23	1.00	21.00	1.00
#000000	1.04	21.00	1.00	21.00
##FFFFFF	20.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000824

Deuteranopia (green-blind)

#000522

Tritanopia (blue-blind)

#000A11

Achromatopsia (no color)

#060606

Design tokens & code

CSS

--color: #040223;
/* rgb */ color: rgb(4, 2, 35);
/* oklch */ color: oklch(13.2% 0.070 275.6);

Tailwind

colors: {
  custom: {
    50: '#48475e',
    500: '#040223',
    950: '#000000',
  },
}

SCSS

$custom: #040223;
$custom-light: #48475e;
$custom-dark: #000000;

JSON

{
  "hex": "#040223",
  "rgb": {
    "r": 4,
    "g": 2,
    "b": 35
  },
  "hsl": {
    "h": 243.636,
    "s": 89.189,
    "l": 7.255
  },
  "oklch": {
    "l": 0.13153,
    "c": 0.07048,
    "h": 275.6
  },
  "luminance": 0.00191
}

Semantic roles & 50–950 ramp

primary

#040223

secondary

#646918

accent

#FF29F2

background

#F4F4F5

surface

#E6E6E9

border

#C2C2C5

text

#000004

muted

#777779

Preview Lab

Preview with #040223

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

Preview Lab → · Contrast checker → · Palette generator →