#040C41#040C41

#040C41 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 19.7% C 0.099 H 266.9°. Best body text is #FFFFFF at 18.52:1 contrast (WCAG AA passes).

Color values

HEX	#040C41
RGB	rgb(4, 12, 65)
HSL	hsl(232, 88%, 14%)
HSV	hsv(232, 94%, 25%)
CMYK	cmyk(93.8%, 81.5%, 0%, 74.5%)
CIE-LAB	lab(6.05, 19.23, -33.92)
CIE-LCH	lch(6.05, 39.00, 299.55°)
OKLab	oklab(19.67% -0.0053 -0.0993)
OKLCH	oklch(19.67% 0.099 266.9)
XYZ	xyz(1.1353, 0.6703, 5.0695)
Luminance	0.0067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 1.62

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040C41 #413904

analogous

#042A41 #040C41 #1A0441

triadic

#040C41 #41040C #0C4104

tetradic

#040C41 #41042A #413904 #04411A

square

#040C41 #41042A #413904 #04411A

split-complementary

#040C41 #411A04 #2A4104

monochromatic

#02051D #02051D #040C41 #08177B #0B21B4

Accessibility & contrast

On white

18.52

#040C41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#040C41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040C41

18.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040C41	#FFFFFF	#000000	##FFFFFF
##040C41	1.00	18.52	1.13	18.52
#FFFFFF	18.52	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001643

Deuteranopia (green-blind)

#001040

Tritanopia (blue-blind)

#001B25

Achromatopsia (no color)

#131313

Design tokens & code

CSS

--color: #040c41;
/* rgb */ color: rgb(4, 12, 65);
/* oklch */ color: oklch(19.7% 0.099 266.9);

Tailwind

colors: {
  custom: {
    50: '#524b76',
    500: '#040c41',
    950: '#000000',
  },
}

SCSS

$custom: #040c41;
$custom-light: #524b76;
$custom-dark: #000000;

JSON

{
  "hex": "#040c41",
  "rgb": {
    "r": 4,
    "g": 12,
    "b": 65
  },
  "hsl": {
    "h": 232.131,
    "s": 88.406,
    "l": 13.529
  },
  "oklch": {
    "l": 0.19668,
    "c": 0.09942,
    "h": 266.9
  },
  "luminance": 0.0067
}

Semantic roles & 50–950 ramp

primary

#040C41

secondary

#82751F

accent

#E329FF

background

#F4F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #040C41

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

Preview Lab → · Contrast checker → · Palette generator →