#040733#040733

#040733 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 16.8% C 0.085 H 269.2°. Best body text is #FFFFFF at 19.38:1 contrast (WCAG AA passes).

Color values

HEX	#040733
RGB	rgb(4, 7, 51)
HSL	hsl(236, 85%, 11%)
HSV	hsv(236, 92%, 20%)
CMYK	cmyk(92.2%, 86.3%, 0%, 80%)
CIE-LAB	lab(3.76, 13.41, -27.47)
CIE-LCH	lch(3.76, 30.57, 296.02°)
OKLab	oklab(16.83% -0.0012 -0.0851)
OKLCH	oklch(16.83% 0.085 269.2)
XYZ	xyz(0.7234, 0.4167, 3.1736)
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

#040733 #333004

analogous

#041E33 #040733 #180433

triadic

#040733 #330407 #073304

tetradic

#040733 #33041E #333004 #043318

square

#040733 #33041E #333004 #043318

split-complementary

#040733 #331804 #1E3304

monochromatic

#02041C #02041C #040733 #080F6C #0D17A4

Accessibility & contrast

On white

19.38

#040733 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040733 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040733

19.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040733	#FFFFFF	#000000	##FFFFFF
##040733	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)

#001034

Deuteranopia (green-blind)

#000B32

Tritanopia (blue-blind)

#00141C

Achromatopsia (no color)

#0D0D0D

Design tokens & code

CSS

--color: #040733;
/* rgb */ color: rgb(4, 7, 51);
/* oklch */ color: oklch(16.8% 0.085 269.2);

Tailwind

colors: {
  custom: {
    50: '#4b496b',
    500: '#040733',
    950: '#000000',
  },
}

SCSS

$custom: #040733;
$custom-light: #4b496b;
$custom-dark: #000000;

JSON

{
  "hex": "#040733",
  "rgb": {
    "r": 4,
    "g": 7,
    "b": 51
  },
  "hsl": {
    "h": 236.17,
    "s": 85.455,
    "l": 10.784
  },
  "oklch": {
    "l": 0.16834,
    "c": 0.08509,
    "h": 269.2
  },
  "luminance": 0.00417
}

Semantic roles & 50–950 ramp

primary

#040733

secondary

#75701D

accent

#EE2CFC

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010007

muted

#77777A

Preview Lab

Preview with #040733

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

Preview Lab → · Contrast checker → · Palette generator →