#04072B#04072B

#04072B is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 15.8% C 0.072 H 270.0°. Best body text is #FFFFFF at 19.62:1 contrast (WCAG AA passes).

Color values

HEX	#04072B
RGB	rgb(4, 7, 43)
HSL	hsl(235, 83%, 9%)
HSV	hsv(235, 91%, 17%)
CMYK	cmyk(90.7%, 83.7%, 0%, 83.1%)
CIE-LAB	lab(3.18, 9.31, -22.40)
CIE-LCH	lch(3.18, 24.26, 292.56°)
OKLab	oklab(15.8% 0 -0.0725)
OKLCH	oklch(15.8% 0.073 270)
XYZ	xyz(0.5619, 0.3521, 2.3234)
Luminance	0.0035 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 4.45

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#04072B #2B2804

analogous

#041B2B #04072B #15042B

triadic

#04072B #2B0407 #072B04

tetradic

#04072B #2B041B #2B2804 #042B15

square

#04072B #2B041B #2B2804 #042B15

split-complementary

#04072B #2B1504 #1B2B04

monochromatic

#03051C #03051C #04072B #091063 #0E199B

Accessibility & contrast

On white

19.62

#04072B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#04072B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #04072B

19.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##04072B	#FFFFFF	#000000	##FFFFFF
##04072B	1.00	19.62	1.07	19.62
#FFFFFF	19.62	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000E2C

Deuteranopia (green-blind)

#000A2A

Tritanopia (blue-blind)

#001117

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #04072b;
/* rgb */ color: rgb(4, 7, 43);
/* oklch */ color: oklch(15.8% 0.072 270.0);

Tailwind

colors: {
  custom: {
    50: '#494a64',
    500: '#04072b',
    950: '#000000',
  },
}

SCSS

$custom: #04072b;
$custom-light: #494a64;
$custom-dark: #000000;

JSON

{
  "hex": "#04072b",
  "rgb": {
    "r": 4,
    "g": 7,
    "b": 43
  },
  "hsl": {
    "h": 235.385,
    "s": 82.979,
    "l": 9.216
  },
  "oklch": {
    "l": 0.15796,
    "c": 0.0725,
    "h": 270
  },
  "luminance": 0.00352
}

Semantic roles & 50–950 ramp

primary

#04072B

secondary

#6E681D

accent

#EA2EF9

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010105

muted

#77777A

Preview Lab

Preview with #04072B

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

Preview Lab → · Contrast checker → · Palette generator →