#040E2A#040E2A

#040E2A is a very dark, muted blue. Relative luminance 0.005; OKLCH L 17.5% C 0.060 H 264.2°. Best body text is #FFFFFF at 19.07:1 contrast (WCAG AA passes).

Color values

HEX	#040E2A
RGB	rgb(4, 14, 42)
HSL	hsl(224, 83%, 9%)
HSV	hsv(224, 90%, 16%)
CMYK	cmyk(90.5%, 66.7%, 0%, 83.5%)
CIE-LAB	lab(4.58, 5.86, -19.44)
CIE-LCH	lch(4.58, 20.30, 286.77°)
OKLab	oklab(17.46% -0.0061 -0.0592)
OKLCH	oklch(17.46% 0.06 264.2)
XYZ	xyz(0.6249, 0.5070, 2.2550)
Luminance	0.0051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.53

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E2A #2A2004

analogous

#04212A #040E2A #0D042A

triadic

#040E2A #2A040E #0E2A04

tetradic

#040E2A #2A0421 #2A2004 #042A0D

square

#040E2A #2A0421 #2A2004 #042A0D

split-complementary

#040E2A #2A0D04 #212A04

monochromatic

#03091C #03091C #040E2A #092162 #0F339A

Accessibility & contrast

On white

19.07

#040E2A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040E2A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E2A

19.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E2A	#FFFFFF	#000000	##FFFFFF
##040E2A	1.00	19.07	1.10	19.07
#FFFFFF	19.07	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00122B

Deuteranopia (green-blind)

#000E29

Tritanopia (blue-blind)

#00151A

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040e2a;
/* rgb */ color: rgb(4, 14, 42);
/* oklch */ color: oklch(17.5% 0.060 264.2);

Tailwind

colors: {
  custom: {
    50: '#494d63',
    500: '#040e2a',
    950: '#000000',
  },
}

SCSS

$custom: #040e2a;
$custom-light: #494d63;
$custom-dark: #000000;

JSON

{
  "hex": "#040e2a",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 42
  },
  "hsl": {
    "h": 224.211,
    "s": 82.609,
    "l": 9.02
  },
  "oklch": {
    "l": 0.17455,
    "c": 0.05956,
    "h": 264.2
  },
  "luminance": 0.00507
}

Semantic roles & 50–950 ramp

primary

#040E2A

secondary

#6D581D

accent

#C42FF9

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#010105

muted

#777779

Preview Lab

Preview with #040E2A

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

Preview Lab → · Contrast checker → · Palette generator →