#040F41#040F41

#040F41 is a very dark, moderate blue. Relative luminance 0.007; OKLCH L 20.3% C 0.096 H 266.1°. Best body text is #FFFFFF at 18.26:1 contrast (WCAG AA passes).

Color values

HEX	#040F41
RGB	rgb(4, 15, 65)
HSL	hsl(229, 88%, 14%)
HSV	hsv(229, 94%, 25%)
CMYK	cmyk(93.8%, 76.9%, 0%, 74.5%)
CIE-LAB	lab(6.77, 17.47, -32.76)
CIE-LCH	lch(6.77, 37.13, 298.07°)
OKLab	oklab(20.27% -0.0066 -0.0953)
OKLCH	oklch(20.27% 0.096 266.1)
XYZ	xyz(1.1747, 0.7490, 5.0827)
Luminance	0.0075 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F41 #413604

analogous

#042D41 #040F41 #170441

triadic

#040F41 #41040F #0F4104

tetradic

#040F41 #41042D #413604 #044117

square

#040F41 #41042D #413604 #044117

split-complementary

#040F41 #411704 #2D4104

monochromatic

#02071D #02071D #040F41 #081C7B #0B2AB4

Accessibility & contrast

On white

18.26

#040F41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.15

#040F41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F41

18.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F41	#FFFFFF	#000000	##FFFFFF
##040F41	1.00	18.26	1.15	18.26
#FFFFFF	18.26	1.00	21.00	1.00
#000000	1.15	21.00	1.00	21.00
##FFFFFF	18.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001843

Deuteranopia (green-blind)

#001240

Tritanopia (blue-blind)

#001D26

Achromatopsia (no color)

#151515

Design tokens & code

CSS

--color: #040f41;
/* rgb */ color: rgb(4, 15, 65);
/* oklch */ color: oklch(20.3% 0.096 266.1);

Tailwind

colors: {
  custom: {
    50: '#524d76',
    500: '#040f41',
    950: '#000000',
  },
}

SCSS

$custom: #040f41;
$custom-light: #524d76;
$custom-dark: #000000;

JSON

{
  "hex": "#040f41",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 65
  },
  "hsl": {
    "h": 229.18,
    "s": 88.406,
    "l": 13.529
  },
  "oklch": {
    "l": 0.20265,
    "c": 0.09555,
    "h": 266.1
  },
  "luminance": 0.00749
}

Semantic roles & 50–950 ramp

primary

#040F41

secondary

#82701F

accent

#D829FF

background

#F4F4F7

surface

#E7E7ED

border

#C3C3C8

text

#030108

muted

#78777B

Preview Lab

Preview with #040F41

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

Preview Lab → · Contrast checker → · Palette generator →