#040730#040730

#040730 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.4% C 0.080 H 269.5°. Best body text is #FFFFFF at 19.48:1 contrast (WCAG AA passes).

Color values

HEX	#040730
RGB	rgb(4, 7, 48)
HSL	hsl(236, 85%, 10%)
HSV	hsv(236, 92%, 19%)
CMYK	cmyk(91.7%, 85.4%, 0%, 81.2%)
CIE-LAB	lab(3.53, 11.78, -25.61)
CIE-LCH	lch(3.53, 28.19, 294.71°)
OKLab	oklab(16.44% -0.0007 -0.0805)
OKLCH	oklch(16.44% 0.08 269.5)
XYZ	xyz(0.6594, 0.3911, 2.8365)
Luminance	0.0039 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040730 #302D04

analogous

#041D30 #040730 #170430

triadic

#040730 #300407 #073004

tetradic

#040730 #30041D #302D04 #043017

square

#040730 #30041D #302D04 #043017

split-complementary

#040730 #301704 #1D3004

monochromatic

#02041C #02041C #040730 #090F68 #0D17A1

Accessibility & contrast

On white

19.48

#040730 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040730 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040730

19.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040730	#FFFFFF	#000000	##FFFFFF
##040730	1.00	19.48	1.08	19.48
#FFFFFF	19.48	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000F31

Deuteranopia (green-blind)

#000A2F

Tritanopia (blue-blind)

#00121A

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #040730;
/* rgb */ color: rgb(4, 7, 48);
/* oklch */ color: oklch(16.4% 0.080 269.5);

Tailwind

colors: {
  custom: {
    50: '#4a4969',
    500: '#040730',
    950: '#000000',
  },
}

SCSS

$custom: #040730;
$custom-light: #4a4969;
$custom-dark: #000000;

JSON

{
  "hex": "#040730",
  "rgb": {
    "r": 4,
    "g": 7,
    "b": 48
  },
  "hsl": {
    "h": 235.909,
    "s": 84.615,
    "l": 10.196
  },
  "oklch": {
    "l": 0.16438,
    "c": 0.08046,
    "h": 269.5
  },
  "luminance": 0.00391
}

Semantic roles & 50–950 ramp

primary

#040730

secondary

#726D1D

accent

#ED2DFB

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010006

muted

#77777A

Preview Lab

Preview with #040730

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

Preview Lab → · Contrast checker → · Palette generator →