#040E28#040E28

#040E28 is a very dark, muted blue. Relative luminance 0.005; OKLCH L 17.3% C 0.056 H 263.5°. Best body text is #FFFFFF at 19.12:1 contrast (WCAG AA passes).

Color values

HEX	#040E28
RGB	rgb(4, 14, 40)
HSL	hsl(223, 82%, 9%)
HSV	hsv(223, 90%, 16%)
CMYK	cmyk(90%, 65%, 0%, 84.3%)
CIE-LAB	lab(4.45, 4.97, -18.12)
CIE-LCH	lch(4.45, 18.79, 285.35°)
OKLab	oklab(17.26% -0.0063 -0.0557)
OKLCH	oklch(17.26% 0.056 263.5)
XYZ	xyz(0.5900, 0.4930, 2.0711)
Luminance	0.0049 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.24

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E28 #281E04

analogous

#042028 #040E28 #0C0428

triadic

#040E28 #28040E #0E2804

tetradic

#040E28 #280420 #281E04 #04280C

square

#040E28 #280420 #281E04 #04280C

split-complementary

#040E28 #280C04 #202804

monochromatic

#030A1C #030A1C #040E28 #0A2160 #0F3597

Accessibility & contrast

On white

19.12

#040E28 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040E28 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E28

19.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E28	#FFFFFF	#000000	##FFFFFF
##040E28	1.00	19.12	1.10	19.12
#FFFFFF	19.12	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021129

Deuteranopia (green-blind)

#000E27

Tritanopia (blue-blind)

#001419

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #040e28;
/* rgb */ color: rgb(4, 14, 40);
/* oklch */ color: oklch(17.3% 0.056 263.5);

Tailwind

colors: {
  custom: {
    50: '#494d62',
    500: '#040e28',
    950: '#000000',
  },
}

SCSS

$custom: #040e28;
$custom-light: #494d62;
$custom-dark: #000000;

JSON

{
  "hex": "#040e28",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 40
  },
  "hsl": {
    "h": 223.333,
    "s": 81.818,
    "l": 8.627
  },
  "oklch": {
    "l": 0.17257,
    "c": 0.05603,
    "h": 263.5
  },
  "luminance": 0.00493
}

Semantic roles & 50–950 ramp

primary

#040E28

secondary

#6B551D

accent

#C030F8

background

#F4F4F5

surface

#E7E7EA

border

#C3C3C6

text

#010105

muted

#777779

Preview Lab

Preview with #040E28

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

Preview Lab → · Contrast checker → · Palette generator →