#040341#040341

#040341 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 18.0% C 0.111 H 268.5°. Best body text is #FFFFFF at 19.19:1 contrast (WCAG AA passes).

Color values

HEX	#040341
RGB	rgb(4, 3, 65)
HSL	hsl(241, 91%, 13%)
HSV	hsv(241, 95%, 25%)
CMYK	cmyk(93.8%, 95.4%, 0%, 74.5%)
CIE-LAB	lab(4.27, 23.51, -36.85)
CIE-LCH	lch(4.27, 43.71, 302.54°)
OKLab	oklab(17.98% -0.0028 -0.1106)
OKLCH	oklch(17.98% 0.111 268.5)
XYZ	xyz(1.0364, 0.4725, 5.0366)
Luminance	0.0047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Night Blue

#040348

ΔE00 1.73

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040341 #404103

analogous

#032141 #040341 #230341

triadic

#040341 #410403 #034104

tetradic

#040341 #410321 #404103 #034123

square

#040341 #410321 #404103 #034123

split-complementary

#040341 #412303 #214103

monochromatic

#02011D #02011D #040341 #08067B #0B08B6

Accessibility & contrast

On white

19.19

#040341 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#040341 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040341

19.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040341	#FFFFFF	#000000	##FFFFFF
##040341	1.00	19.19	1.09	19.19
#FFFFFF	19.19	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001243

Deuteranopia (green-blind)

#000B40

Tritanopia (blue-blind)

#001723

Achromatopsia (no color)

#0F0F0F

Design tokens & code

CSS

--color: #040341;
/* rgb */ color: rgb(4, 3, 65);
/* oklch */ color: oklch(18.0% 0.111 268.5);

Tailwind

colors: {
  custom: {
    50: '#524676',
    500: '#040341',
    950: '#000000',
  },
}

SCSS

$custom: #040341;
$custom-light: #524676;
$custom-dark: #000000;

JSON

{
  "hex": "#040341",
  "rgb": {
    "r": 4,
    "g": 3,
    "b": 65
  },
  "hsl": {
    "h": 240.968,
    "s": 91.176,
    "l": 13.333
  },
  "oklch": {
    "l": 0.17978,
    "c": 0.11066,
    "h": 268.5
  },
  "luminance": 0.00473
}

Semantic roles & 50–950 ramp

primary

#040341

secondary

#81831D

accent

#FF29FC

background

#F5F3F7

surface

#E9E5ED

border

#C5C1C8

text

#030009

muted

#78777B

Preview Lab

Preview with #040341

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

Preview Lab → · Contrast checker → · Palette generator →