#040423#040423

#040423 is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 13.9% C 0.065 H 273.8°. Best body text is #FFFFFF at 20.06:1 contrast (WCAG AA passes).

Color values

HEX	#040423
RGB	rgb(4, 4, 35)
HSL	hsl(240, 79%, 8%)
HSV	hsv(240, 89%, 14%)
CMYK	cmyk(88.6%, 88.6%, 0%, 86.3%)
CIE-LAB	lab(2.11, 7.14, -17.90)
CIE-LCH	lch(2.11, 19.27, 291.76°)
OKLab	oklab(13.87% 0.0043 -0.0653)
OKLCH	oklch(13.87% 0.065 273.8)
XYZ	xyz(0.3968, 0.2340, 1.6140)
Luminance	0.0023 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.83

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040423 #232304

analogous

#041323 #040423 #130423

triadic

#040423 #230404 #042304

tetradic

#040423 #230413 #232304 #042313

square

#040423 #230413 #232304 #042313

split-complementary

#040423 #231304 #132304

monochromatic

#03031B #03031B #040423 #0A0A5A #111191

Accessibility & contrast

On white

20.06

#040423 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#040423 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040423

20.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040423	#FFFFFF	#000000	##FFFFFF
##040423	1.00	20.06	1.05	20.06
#FFFFFF	20.06	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	20.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000924

Deuteranopia (green-blind)

#000622

Tritanopia (blue-blind)

#000C12

Achromatopsia (no color)

#080808

Design tokens & code

CSS

--color: #040423;
/* rgb */ color: rgb(4, 4, 35);
/* oklch */ color: oklch(13.9% 0.065 273.8);

Tailwind

colors: {
  custom: {
    50: '#48485e',
    500: '#040423',
    950: '#000000',
  },
}

SCSS

$custom: #040423;
$custom-light: #48485e;
$custom-dark: #000000;

JSON

{
  "hex": "#040423",
  "rgb": {
    "r": 4,
    "g": 4,
    "b": 35
  },
  "hsl": {
    "h": 240,
    "s": 79.487,
    "l": 7.647
  },
  "oklch": {
    "l": 0.13871,
    "c": 0.06544,
    "h": 273.8
  },
  "luminance": 0.00234
}

Semantic roles & 50–950 ramp

primary

#040423

secondary

#66661D

accent

#F632F6

background

#F4F4F5

surface

#E6E6E9

border

#C2C2C5

text

#000004

muted

#777779

Preview Lab

Preview with #040423

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

Preview Lab → · Contrast checker → · Palette generator →