#040E2E#040E2E

#040E2E is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.9% C 0.066 H 265.1°. Best body text is #FFFFFF at 18.96:1 contrast (WCAG AA passes).

Color values

HEX	#040E2E
RGB	rgb(4, 14, 46)
HSL	hsl(226, 84%, 10%)
HSV	hsv(226, 91%, 18%)
CMYK	cmyk(91.3%, 69.6%, 0%, 82%)
CIE-LAB	lab(4.85, 7.77, -22.02)
CIE-LCH	lch(4.85, 23.35, 289.43°)
OKLab	oklab(17.87% -0.0057 -0.0662)
OKLCH	oklch(17.87% 0.066 265.1)
XYZ	xyz(0.7001, 0.5371, 2.6510)
Luminance	0.0054 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.20

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040E2E #2E2404

analogous

#04232E #040E2E #0F042E

triadic

#040E2E #2E040E #0E2E04

tetradic

#040E2E #2E0423 #2E2404 #042E0F

square

#040E2E #2E0423 #2E2404 #042E0F

split-complementary

#040E2E #2E0F04 #232E04

monochromatic

#02091C #02091C #040E2E #091F66 #0E309F

Accessibility & contrast

On white

18.96

#040E2E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.11

#040E2E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040E2E

18.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040E2E	#FFFFFF	#000000	##FFFFFF
##040E2E	1.00	18.96	1.11	18.96
#FFFFFF	18.96	1.00	21.00	1.00
#000000	1.11	21.00	1.00	21.00
##FFFFFF	18.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00132F

Deuteranopia (green-blind)

#000F2D

Tritanopia (blue-blind)

#00161C

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040e2e;
/* rgb */ color: rgb(4, 14, 46);
/* oklch */ color: oklch(17.9% 0.066 265.1);

Tailwind

colors: {
  custom: {
    50: '#4a4d67',
    500: '#040e2e',
    950: '#000000',
  },
}

SCSS

$custom: #040e2e;
$custom-light: #4a4d67;
$custom-dark: #000000;

JSON

{
  "hex": "#040e2e",
  "rgb": {
    "r": 4,
    "g": 14,
    "b": 46
  },
  "hsl": {
    "h": 225.714,
    "s": 84,
    "l": 9.804
  },
  "oklch": {
    "l": 0.17869,
    "c": 0.06649,
    "h": 265.1
  },
  "luminance": 0.00537
}

Semantic roles & 50–950 ramp

primary

#040E2E

secondary

#715D1D

accent

#CA2EFA

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#010106

muted

#77777A

Preview Lab

Preview with #040E2E

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

Preview Lab → · Contrast checker → · Palette generator →