#040E3A#040E3A

#040E3A is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.2% C 0.086 H 266.2°. Best body text is #FFFFFF at 18.60:1 contrast (WCAG AA passes).

Color values

HEX	#040E3A
RGB	rgb(4, 14, 58)
HSL	hsl(229, 87%, 12%)
HSV	hsv(229, 93%, 23%)
CMYK	cmyk(93.1%, 75.9%, 0%, 77.3%)
CIE-LAB	lab(5.83, 14.39, -29.27)
CIE-LCH	lch(5.83, 32.61, 296.18°)
OKLab	oklab(19.22% -0.0056 -0.0859)
OKLCH	oklch(19.22% 0.086 266.2)
XYZ	xyz(0.9706, 0.6453, 4.0756)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E3A #3A3004

analogous

#04293A #040E3A #15043A

triadic

#040E3A #3A040E #0E3A04

tetradic

#040E3A #3A0429 #3A3004 #043A15

square

#040E3A #3A0429 #3A3004 #043A15

split-complementary

#040E3A #3A1504 #293A04

monochromatic

#02071D #02071D #040E3A #081C73 #0C2AAD

Accessibility & contrast

On white

18.60

#040E3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#040E3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E3A

18.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E3A	#FFFFFF	#000000	##FFFFFF
##040E3A	1.00	18.60	1.13	18.60
#FFFFFF	18.60	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00163B

Deuteranopia (green-blind)

#001039

Tritanopia (blue-blind)

#001A22

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #040e3a;
/* rgb */ color: rgb(4, 14, 58);
/* oklch */ color: oklch(19.2% 0.086 266.2);

Tailwind

colors: {
  custom: {
    50: '#4f4c71',
    500: '#040e3a',
    950: '#000000',
  },
}

SCSS

$custom: #040e3a;
$custom-light: #4f4c71;
$custom-dark: #000000;

JSON

{
  "hex": "#040e3a",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 58
  },
  "hsl": {
    "h": 228.889,
    "s": 87.097,
    "l": 12.157
  },
  "oklch": {
    "l": 0.19216,
    "c": 0.08613,
    "h": 266.2
  },
  "luminance": 0.00645
}

Semantic roles & 50–950 ramp

primary

#040E3A

secondary

#7C6A1E

accent

#D62BFD

background

#F4F4F6

surface

#E7E7EC

border

#C3C3C7

text

#020107

muted

#78777A

Preview Lab

Preview with #040E3A

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

Preview Lab → · Contrast checker → · Palette generator →