#040B41#040B41

#040B41 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 19.5% C 0.101 H 267.2°. Best body text is #FFFFFF at 18.59:1 contrast (WCAG AA passes).

Color values

HEX	#040B41
RGB	rgb(4, 11, 65)
HSL	hsl(233, 88%, 14%)
HSV	hsv(233, 94%, 25%)
CMYK	cmyk(93.8%, 83.1%, 0%, 74.5%)
CIE-LAB	lab(5.84, 19.75, -34.27)
CIE-LCH	lch(5.84, 39.56, 299.96°)
OKLab	oklab(19.48% -0.0049 -0.1005)
OKLCH	oklch(19.48% 0.101 267.2)
XYZ	xyz(1.1235, 0.6467, 5.0656)
Luminance	0.0065 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 1.82

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040B41 #413A04

analogous

#042941 #040B41 #1B0441

triadic

#040B41 #41040B #0B4104

tetradic

#040B41 #410429 #413A04 #04411B

square

#040B41 #410429 #413A04 #04411B

split-complementary

#040B41 #411B04 #294104

monochromatic

#02051D #02051D #040B41 #08157B #0B1FB4

Accessibility & contrast

On white

18.59

#040B41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#040B41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040B41

18.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040B41	#FFFFFF	#000000	##FFFFFF
##040B41	1.00	18.59	1.13	18.59
#FFFFFF	18.59	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.59	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: #040b41;
/* rgb */ color: rgb(4, 11, 65);
/* oklch */ color: oklch(19.5% 0.101 267.2);

Tailwind

colors: {
  custom: {
    50: '#524a76',
    500: '#040b41',
    950: '#000000',
  },
}

SCSS

$custom: #040b41;
$custom-light: #524a76;
$custom-dark: #000000;

JSON

{
  "hex": "#040b41",
  "rgb": {
    "r": 4,
    "g": 11,
    "b": 65
  },
  "hsl": {
    "h": 233.115,
    "s": 88.406,
    "l": 13.529
  },
  "oklch": {
    "l": 0.19481,
    "c": 0.10064,
    "h": 267.2
  },
  "luminance": 0.00647
}

Semantic roles & 50–950 ramp

primary

#040B41

secondary

#82771F

accent

#E629FF

background

#F5F4F7

surface

#E8E7ED

border

#C4C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #040B41

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

Preview Lab → · Contrast checker → · Palette generator →