#040E2D#040E2D

#040E2D is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.8% C 0.065 H 264.9°. Best body text is #FFFFFF at 18.99:1 contrast (WCAG AA passes).

Color values

HEX	#040E2D
RGB	rgb(4, 14, 45)
HSL	hsl(225, 84%, 10%)
HSV	hsv(225, 91%, 18%)
CMYK	cmyk(91.1%, 68.9%, 0%, 82.4%)
CIE-LAB	lab(4.78, 7.27, -21.38)
CIE-LCH	lch(4.78, 22.58, 288.78°)
OKLab	oklab(17.76% -0.0058 -0.0645)
OKLCH	oklch(17.76% 0.065 264.9)
XYZ	xyz(0.6806, 0.5293, 2.5484)
Luminance	0.0053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.52

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E2D #2D2304

analogous

#04232D #040E2D #0F042D

triadic

#040E2D #2D040E #0E2D04

tetradic

#040E2D #2D0423 #2D2304 #042D0F

square

#040E2D #2D0423 #2D2304 #042D0F

split-complementary

#040E2D #2D0F04 #232D04

monochromatic

#02091C #02091C #040E2D #091F65 #0E319D

Accessibility & contrast

On white

18.99

#040E2D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#040E2D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E2D

18.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E2D	#FFFFFF	#000000	##FFFFFF
##040E2D	1.00	18.99	1.11	18.99
#FFFFFF	18.99	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00122E

Deuteranopia (green-blind)

#000E2C

Tritanopia (blue-blind)

#00161B

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040e2d;
/* rgb */ color: rgb(4, 14, 45);
/* oklch */ color: oklch(17.8% 0.065 264.9);

Tailwind

colors: {
  custom: {
    50: '#4a4d66',
    500: '#040e2d',
    950: '#000000',
  },
}

SCSS

$custom: #040e2d;
$custom-light: #4a4d66;
$custom-dark: #000000;

JSON

{
  "hex": "#040e2d",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 45
  },
  "hsl": {
    "h": 225.366,
    "s": 83.673,
    "l": 9.608
  },
  "oklch": {
    "l": 0.17763,
    "c": 0.06477,
    "h": 264.9
  },
  "luminance": 0.00529
}

Semantic roles & 50–950 ramp

primary

#040E2D

secondary

#705C1D

accent

#C82EFA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #040E2D

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

Preview Lab → · Contrast checker → · Palette generator →