#040E33#040E33

#040E33 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.4% C 0.075 H 265.8°. Best body text is #FFFFFF at 18.82:1 contrast (WCAG AA passes).

Color values

HEX	#040E33
RGB	rgb(4, 14, 51)
HSL	hsl(227, 85%, 11%)
HSV	hsv(227, 92%, 20%)
CMYK	cmyk(92.2%, 72.5%, 0%, 80%)
CIE-LAB	lab(5.23, 10.42, -25.12)
CIE-LCH	lch(5.23, 27.20, 292.52°)
OKLab	oklab(18.41% -0.0055 -0.0747)
OKLCH	oklch(18.41% 0.075 265.8)
XYZ	xyz(0.8044, 0.5788, 3.2006)
Luminance	0.0058 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E33 #332904

analogous

#042533 #040E33 #110433

triadic

#040E33 #33040E #0E3304

tetradic

#040E33 #330425 #332904 #043311

square

#040E33 #330425 #332904 #043311

split-complementary

#040E33 #331104 #253304

monochromatic

#02081C #02081C #040E33 #081E6C #0D2DA4

Accessibility & contrast

On white

18.82

#040E33 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.12

#040E33 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E33

18.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E33	#FFFFFF	#000000	##FFFFFF
##040E33	1.00	18.82	1.12	18.82
#FFFFFF	18.82	1.00	21.00	1.00
#000000	1.12	21.00	1.00	21.00
##FFFFFF	18.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001434

Deuteranopia (green-blind)

#000F32

Tritanopia (blue-blind)

#00181E

Achromatopsia (no color)

#111111

Design tokens & code

CSS

--color: #040e33;
/* rgb */ color: rgb(4, 14, 51);
/* oklch */ color: oklch(18.4% 0.075 265.8);

Tailwind

colors: {
  custom: {
    50: '#4c4d6b',
    500: '#040e33',
    950: '#000000',
  },
}

SCSS

$custom: #040e33;
$custom-light: #4c4d6b;
$custom-dark: #000000;

JSON

{
  "hex": "#040e33",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 51
  },
  "hsl": {
    "h": 227.234,
    "s": 85.455,
    "l": 10.784
  },
  "oklch": {
    "l": 0.18412,
    "c": 0.07487,
    "h": 265.8
  },
  "luminance": 0.00579
}

Semantic roles & 50–950 ramp

primary

#040E33

secondary

#75631D

accent

#D02CFC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #040E33

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

Preview Lab → · Contrast checker → · Palette generator →