#00042C#00042C

#00042C is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 14.6% C 0.083 H 263.9°. Best body text is #FFFFFF at 19.93:1 contrast (WCAG AA passes).

Color values

HEX	#00042C
RGB	rgb(0, 4, 44)
HSL	hsl(235, 100%, 9%)
HSV	hsv(235, 100%, 17%)
CMYK	cmyk(100%, 90.9%, 0%, 82.7%)
CIE-LAB	lab(2.43, 9.94, -24.37)
CIE-LCH	lch(2.43, 26.32, 292.19°)
OKLab	oklab(14.61% -0.0088 -0.0822)
OKLCH	oklch(14.61% 0.083 263.9)
XYZ	xyz(0.4979, 0.2686, 2.4080)
Luminance	0.0027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#00042C #2C2800

analogous

#001A2C #00042C #12002C

triadic

#00042C #2C0004 #042C00

tetradic

#00042C #2C001A #2C2800 #002C12

square

#00042C #2C001A #2C2800 #002C12

split-complementary

#00042C #2C1200 #1A2C00

monochromatic

#00031F #00031F #00042C #000A69 #000FA6

Accessibility & contrast

On white

19.93

#00042C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.05

#00042C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #00042C

19.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##00042C	#FFFFFF	#000000	##FFFFFF
##00042C	1.00	19.93	1.05	19.93
#FFFFFF	19.93	1.00	21.00	1.00
#000000	1.05	21.00	1.00	21.00
##FFFFFF	19.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000B2D

Deuteranopia (green-blind)

#00072B

Tritanopia (blue-blind)

#000F17

Achromatopsia (no color)

#090909

Design tokens & code

CSS

--color: #00042c;
/* rgb */ color: rgb(0, 4, 44);
/* oklch */ color: oklch(14.6% 0.083 263.9);

Tailwind

colors: {
  custom: {
    50: '#474865',
    500: '#00042c',
    950: '#000000',
  },
}

SCSS

$custom: #00042c;
$custom-light: #474865;
$custom-dark: #000000;

JSON

{
  "hex": "#00042c",
  "rgb": {
    "r": 0,
    "g": 4,
    "b": 44
  },
  "hsl": {
    "h": 234.545,
    "s": 100,
    "l": 8.627
  },
  "oklch": {
    "l": 0.1461,
    "c": 0.08269,
    "h": 263.9
  },
  "luminance": 0.00269
}

Semantic roles & 50–950 ramp

primary

#00042C

secondary

#736B14

accent

#EC29FF

background

#F4F4F6

surface

#E6E6EB

border

#C2C2C6

text

#010005

muted

#77777A

Preview Lab

Preview with #00042C

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

Preview Lab → · Contrast checker → · Palette generator →