#040541#040541

#040541 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.4% C 0.108 H 268.3°. Best body text is #FFFFFF at 19.04:1 contrast (WCAG AA passes).

Color values

HEX	#040541
RGB	rgb(4, 5, 65)
HSL	hsl(239, 88%, 14%)
HSV	hsv(239, 94%, 25%)
CMYK	cmyk(93.8%, 92.3%, 0%, 74.5%)
CIE-LAB	lab(4.66, 22.59, -36.21)
CIE-LCH	lch(4.66, 42.68, 301.96°)
OKLab	oklab(18.38% -0.0032 -0.1079)
OKLCH	oklch(18.38% 0.108 268.3)
XYZ	xyz(1.0581, 0.5159, 5.0438)
Luminance	0.0052 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 2.06

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040541 #414004

analogous

#042341 #040541 #210441

triadic

#040541 #410405 #054104

tetradic

#040541 #410423 #414004 #044121

square

#040541 #410423 #414004 #044121

split-complementary

#040541 #412104 #234104

monochromatic

#02021D #02021D #040541 #08097B #0B0EB4

Accessibility & contrast

On white

19.04

#040541 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040541 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040541

19.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040541	#FFFFFF	#000000	##FFFFFF
##040541	1.00	19.04	1.10	19.04
#FFFFFF	19.04	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001343

Deuteranopia (green-blind)

#000D40

Tritanopia (blue-blind)

#001823

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040541;
/* rgb */ color: rgb(4, 5, 65);
/* oklch */ color: oklch(18.4% 0.108 268.3);

Tailwind

colors: {
  custom: {
    50: '#524776',
    500: '#040541',
    950: '#000000',
  },
}

SCSS

$custom: #040541;
$custom-light: #524776;
$custom-dark: #000000;

JSON

{
  "hex": "#040541",
  "rgb": {
    "r": 4,
    "g": 5,
    "b": 65
  },
  "hsl": {
    "h": 239.016,
    "s": 88.406,
    "l": 13.529
  },
  "oklch": {
    "l": 0.18376,
    "c": 0.10798,
    "h": 268.3
  },
  "luminance": 0.00516
}

Semantic roles & 50–950 ramp

primary

#040541

secondary

#82811F

accent

#FB29FF

background

#F5F4F7

surface

#E8E6ED

border

#C4C2C8

text

#030008

muted

#78777B

Preview Lab

Preview with #040541

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

Preview Lab → · Contrast checker → · Palette generator →