#040636#040636

#040636 is a very dark, moderate blue. Relative luminance 0.004; OKLCH L 17.0% C 0.091 H 269.3°. Best body text is #FFFFFF at 19.37:1 contrast (WCAG AA passes).

Color values

HEX	#040636
RGB	rgb(4, 6, 54)
HSL	hsl(238, 86%, 11%)
HSV	hsv(238, 93%, 21%)
CMYK	cmyk(92.6%, 88.9%, 0%, 78.8%)
CIE-LAB	lab(3.81, 15.54, -29.61)
CIE-LCH	lch(3.81, 33.44, 297.70°)
OKLab	oklab(17.01% -0.0012 -0.0911)
OKLCH	oklch(17.01% 0.091 269.3)
XYZ	xyz(0.7808, 0.4223, 3.5297)
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

#040636 #363404

analogous

#041F36 #040636 #1B0436

triadic

#040636 #360406 #063604

tetradic

#040636 #36041F #363404 #04361B

square

#040636 #36041F #363404 #04361B

split-complementary

#040636 #361B04 #1F3604

monochromatic

#02031C #02031C #040636 #080C6F #0C13A8

Accessibility & contrast

On white

19.37

#040636 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040636 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040636

19.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040636	#FFFFFF	#000000	##FFFFFF
##040636	1.00	19.37	1.08	19.37
#FFFFFF	19.37	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001037

Deuteranopia (green-blind)

#000B35

Tritanopia (blue-blind)

#00141D

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #040636;
/* rgb */ color: rgb(4, 6, 54);
/* oklch */ color: oklch(17.0% 0.091 269.3);

Tailwind

colors: {
  custom: {
    50: '#4d496d',
    500: '#040636',
    950: '#000000',
  },
}

SCSS

$custom: #040636;
$custom-light: #4d496d;
$custom-dark: #000000;

JSON

{
  "hex": "#040636",
  "rgb": {
    "r": 4,
    "g": 6,
    "b": 54
  },
  "hsl": {
    "h": 237.6,
    "s": 86.207,
    "l": 11.373
  },
  "oklch": {
    "l": 0.17013,
    "c": 0.09111,
    "h": 269.3
  },
  "luminance": 0.00422
}

Semantic roles & 50–950 ramp

primary

#040636

secondary

#78741E

accent

#F42BFC

background

#F4F4F6

surface

#E7E6EC

border

#C3C2C7

text

#020007

muted

#78777A

Preview Lab

Preview with #040636

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

Preview Lab → · Contrast checker → · Palette generator →