#04043A#04043A

#04043A is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.1% C 0.100 H 269.3°. Best body text is #FFFFFF at 19.38:1 contrast (WCAG AA passes).

Color values

HEX	#04043A
RGB	rgb(4, 4, 58)
HSL	hsl(240, 87%, 12%)
HSV	hsv(240, 93%, 23%)
CMYK	cmyk(93.1%, 93.1%, 0%, 77.3%)
CIE-LAB	lab(3.78, 18.82, -32.60)
CIE-LCH	lch(3.78, 37.64, 300.00°)
OKLab	oklab(17.14% -0.0013 -0.0998)
OKLCH	oklch(17.14% 0.1 269.3)
XYZ	xyz(0.8569, 0.4180, 4.0377)
Luminance	0.0042 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04043A #3A3A04

analogous

#041F3A #04043A #1F043A

triadic

#04043A #3A0404 #043A04

tetradic

#04043A #3A041F #3A3A04 #043A1F

square

#04043A #3A041F #3A3A04 #043A1F

split-complementary

#04043A #3A1F04 #1F3A04

monochromatic

#02021D #02021D #04043A #080873 #0C0CAD

Accessibility & contrast

On white

19.38

#04043A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#04043A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04043A

19.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04043A	#FFFFFF	#000000	##FFFFFF
##04043A	1.00	19.38	1.08	19.38
#FFFFFF	19.38	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00103B

Deuteranopia (green-blind)

#000A39

Tritanopia (blue-blind)

#00151F

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #04043a;
/* rgb */ color: rgb(4, 4, 58);
/* oklch */ color: oklch(17.1% 0.100 269.3);

Tailwind

colors: {
  custom: {
    50: '#4e4771',
    500: '#04043a',
    950: '#000000',
  },
}

SCSS

$custom: #04043a;
$custom-light: #4e4771;
$custom-dark: #000000;

JSON

{
  "hex": "#04043a",
  "rgb": {
    "r": 4,
    "g": 4,
    "b": 58
  },
  "hsl": {
    "h": 240,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.17136,
    "c": 0.09982,
    "h": 269.3
  },
  "luminance": 0.00418
}

Semantic roles & 50–950 ramp

primary

#04043A

secondary

#7C7C1E

accent

#FD2BFD

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020008

muted

#78777B

Preview Lab

Preview with #04043A

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

Preview Lab → · Contrast checker → · Palette generator →