#040E29#040E29

#040E29 is a very dark, muted blue. Relative luminance 0.005; OKLCH L 17.4% C 0.058 H 263.8°. Best body text is #FFFFFF at 19.09:1 contrast (WCAG AA passes).

Color values

HEX	#040E29
RGB	rgb(4, 14, 41)
HSL	hsl(224, 82%, 9%)
HSV	hsv(224, 90%, 16%)
CMYK	cmyk(90.2%, 65.9%, 0%, 83.9%)
CIE-LAB	lab(4.52, 5.41, -18.79)
CIE-LCH	lch(4.52, 19.55, 286.06°)
OKLab	oklab(17.36% -0.0062 -0.0575)
OKLCH	oklch(17.36% 0.058 263.8)
XYZ	xyz(0.6072, 0.4999, 2.1619)
Luminance	0.0050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 6.88

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E29 #291F04

analogous

#042129 #040E29 #0D0429

triadic

#040E29 #29040E #0E2904

tetradic

#040E29 #290421 #291F04 #04290D

square

#040E29 #290421 #291F04 #04290D

split-complementary

#040E29 #290D04 #212904

monochromatic

#030A1C #030A1C #040E29 #092161 #0F3499

Accessibility & contrast

On white

19.09

#040E29 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040E29 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E29

19.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E29	#FFFFFF	#000000	##FFFFFF
##040E29	1.00	19.09	1.10	19.09
#FFFFFF	19.09	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#01112A

Deuteranopia (green-blind)

#000E28

Tritanopia (blue-blind)

#001519

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040e29;
/* rgb */ color: rgb(4, 14, 41);
/* oklch */ color: oklch(17.4% 0.058 263.8);

Tailwind

colors: {
  custom: {
    50: '#494d63',
    500: '#040e29',
    950: '#000000',
  },
}

SCSS

$custom: #040e29;
$custom-light: #494d63;
$custom-dark: #000000;

JSON

{
  "hex": "#040e29",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 41
  },
  "hsl": {
    "h": 223.784,
    "s": 82.222,
    "l": 8.824
  },
  "oklch": {
    "l": 0.17355,
    "c": 0.0578,
    "h": 263.8
  },
  "luminance": 0.005
}

Semantic roles & 50–950 ramp

primary

#040E29

secondary

#6C561D

accent

#C22FF9

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#010105

muted

#777779

Preview Lab

Preview with #040E29

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

Preview Lab → · Contrast checker → · Palette generator →