#040E40#040E40

#040E40 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.9% C 0.095 H 266.4°. Best body text is #FFFFFF at 18.39:1 contrast (WCAG AA passes).

Color values

HEX	#040E40
RGB	rgb(4, 14, 64)
HSL	hsl(230, 88%, 13%)
HSV	hsv(230, 94%, 25%)
CMYK	cmyk(93.8%, 78.1%, 0%, 74.9%)
CIE-LAB	lab(6.41, 17.59, -32.63)
CIE-LCH	lch(6.41, 37.06, 298.32°)
OKLab	oklab(19.94% -0.006 -0.0952)
OKLCH	oklch(19.94% 0.095 266.4)
XYZ	xyz(1.1322, 0.7099, 4.9268)
Luminance	0.0071 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E40 #403604

analogous

#042C40 #040E40 #180440

triadic

#040E40 #40040E #0E4004

tetradic

#040E40 #40042C #403604 #044018

square

#040E40 #40042C #403604 #044018

split-complementary

#040E40 #401804 #2C4004

monochromatic

#02061D #02061D #040E40 #081B7A #0B27B3

Accessibility & contrast

On white

18.39

#040E40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.14

#040E40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E40

18.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E40	#FFFFFF	#000000	##FFFFFF
##040E40	1.00	18.39	1.14	18.39
#FFFFFF	18.39	1.00	21.00	1.00
#000000	1.14	21.00	1.00	21.00
##FFFFFF	18.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001742

Deuteranopia (green-blind)

#00113F

Tritanopia (blue-blind)

#001C25

Achromatopsia (no color)

#141414

Design tokens & code

CSS

--color: #040e40;
/* rgb */ color: rgb(4, 14, 64);
/* oklch */ color: oklch(19.9% 0.095 266.4);

Tailwind

colors: {
  custom: {
    50: '#514c75',
    500: '#040e40',
    950: '#000000',
  },
}

SCSS

$custom: #040e40;
$custom-light: #514c75;
$custom-dark: #000000;

JSON

{
  "hex": "#040e40",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 64
  },
  "hsl": {
    "h": 230,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.19937,
    "c": 0.09536,
    "h": 266.4
  },
  "luminance": 0.0071
}

Semantic roles & 50–950 ramp

primary

#040E40

secondary

#81711F

accent

#DB29FE

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #040E40

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

Preview Lab → · Contrast checker → · Palette generator →