#040F36#040F36

#040F36 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.0% C 0.078 H 265.5°. Best body text is #FFFFFF at 18.64:1 contrast (WCAG AA passes).

Color values

HEX	#040F36
RGB	rgb(4, 15, 54)
HSL	hsl(227, 86%, 11%)
HSV	hsv(227, 93%, 21%)
CMYK	cmyk(92.6%, 72.2%, 0%, 78.8%)
CIE-LAB	lab(5.72, 11.61, -26.53)
CIE-LCH	lch(5.72, 28.96, 293.64°)
OKLab	oklab(18.99% -0.0062 -0.078)
OKLCH	oklch(18.99% 0.078 265.5)
XYZ	xyz(0.8865, 0.6337, 3.5649)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.29

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F36 #362B04

analogous

#042836 #040F36 #120436

triadic

#040F36 #36040F #0F3604

tetradic

#040F36 #360428 #362B04 #043612

square

#040F36 #360428 #362B04 #043612

split-complementary

#040F36 #361204 #283604

monochromatic

#02081C #02081C #040F36 #081F6F #0C2FA8

Accessibility & contrast

On white

18.64

#040F36 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#040F36 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F36

18.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F36	#FFFFFF	#000000	##FFFFFF
##040F36	1.00	18.64	1.13	18.64
#FFFFFF	18.64	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001537

Deuteranopia (green-blind)

#001035

Tritanopia (blue-blind)

#001920

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #040f36;
/* rgb */ color: rgb(4, 15, 54);
/* oklch */ color: oklch(19.0% 0.078 265.5);

Tailwind

colors: {
  custom: {
    50: '#4d4d6d',
    500: '#040f36',
    950: '#000000',
  },
}

SCSS

$custom: #040f36;
$custom-light: #4d4d6d;
$custom-dark: #000000;

JSON

{
  "hex": "#040f36",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 54
  },
  "hsl": {
    "h": 226.8,
    "s": 86.207,
    "l": 11.373
  },
  "oklch": {
    "l": 0.18985,
    "c": 0.07829,
    "h": 265.5
  },
  "luminance": 0.00634
}

Semantic roles & 50–950 ramp

primary

#040F36

secondary

#78641E

accent

#CE2BFC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020107

muted

#78777A

Preview Lab

Preview with #040F36

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

Preview Lab → · Contrast checker → · Palette generator →