#040C40#040C40

#040C40 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.5% C 0.098 H 267.0°. Best body text is #FFFFFF at 18.55:1 contrast (WCAG AA passes).

Color values

HEX	#040C40
RGB	rgb(4, 12, 64)
HSL	hsl(232, 88%, 13%)
HSV	hsv(232, 94%, 25%)
CMYK	cmyk(93.8%, 81.2%, 0%, 74.9%)
CIE-LAB	lab(5.95, 18.71, -33.38)
CIE-LCH	lch(5.95, 38.27, 299.27°)
OKLab	oklab(19.54% -0.0052 -0.0978)
OKLCH	oklch(19.54% 0.098 267)
XYZ	xyz(1.1066, 0.6588, 4.9183)
Luminance	0.0066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 1.65

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040C40 #403804

analogous

#042A40 #040C40 #1A0440

triadic

#040C40 #40040C #0C4004

tetradic

#040C40 #40042A #403804 #04401A

square

#040C40 #40042A #403804 #04401A

split-complementary

#040C40 #401A04 #2A4004

monochromatic

#02051D #02051D #040C40 #08177A #0B22B3

Accessibility & contrast

On white

18.55

#040C40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#040C40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040C40

18.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040C40	#FFFFFF	#000000	##FFFFFF
##040C40	1.00	18.55	1.13	18.55
#FFFFFF	18.55	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001642

Deuteranopia (green-blind)

#00103F

Tritanopia (blue-blind)

#001B25

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #040c40;
/* rgb */ color: rgb(4, 12, 64);
/* oklch */ color: oklch(19.5% 0.098 267.0);

Tailwind

colors: {
  custom: {
    50: '#514b75',
    500: '#040c40',
    950: '#000000',
  },
}

SCSS

$custom: #040c40;
$custom-light: #514b75;
$custom-dark: #000000;

JSON

{
  "hex": "#040c40",
  "rgb": {
    "r": 4,
    "g": 12,
    "b": 64
  },
  "hsl": {
    "h": 232,
    "s": 88.235,
    "l": 13.333
  },
  "oklch": {
    "l": 0.1954,
    "c": 0.09794,
    "h": 267
  },
  "luminance": 0.00659
}

Semantic roles & 50–950 ramp

primary

#040C40

secondary

#81741F

accent

#E229FE

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #040C40

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

Preview Lab → · Contrast checker → · Palette generator →