#040431#040431

#040431 is a very dark, moderate blue. Relative luminance 0.003; OKLCH L 15.8% C 0.087 H 270.6°. Best body text is #FFFFFF at 19.69:1 contrast (WCAG AA passes).

Color values

HEX	#040431
RGB	rgb(4, 4, 49)
HSL	hsl(240, 85%, 10%)
HSV	hsv(240, 92%, 19%)
CMYK	cmyk(91.8%, 91.8%, 0%, 80.8%)
CIE-LAB	lab(3.02, 13.52, -27.18)
CIE-LCH	lch(3.02, 30.35, 296.44°)
OKLab	oklab(15.82% 0.001 -0.087)
OKLCH	oklch(15.82% 0.087 270.6)
XYZ	xyz(0.6477, 0.3343, 2.9355)
Luminance	0.0033 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040431 #313104

analogous

#041A31 #040431 #1A0431

triadic

#040431 #310404 #043104

tetradic

#040431 #31041A #313104 #04311A

square

#040431 #31041A #313104 #04311A

split-complementary

#040431 #311A04 #1A3104

monochromatic

#02021C #02021C #040431 #09096A #0D0DA2

Accessibility & contrast

On white

19.69

#040431 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.07

#040431 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040431

19.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040431	#FFFFFF	#000000	##FFFFFF
##040431	1.00	19.69	1.07	19.69
#FFFFFF	19.69	1.00	21.00	1.00
#000000	1.07	21.00	1.00	21.00
##FFFFFF	19.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000D32

Deuteranopia (green-blind)

#000930

Tritanopia (blue-blind)

#00111A

Achromatopsia (no color)

#0B0B0B

Design tokens & code

CSS

--color: #040431;
/* rgb */ color: rgb(4, 4, 49);
/* oklch */ color: oklch(15.8% 0.087 270.6);

Tailwind

colors: {
  custom: {
    50: '#4b4869',
    500: '#040431',
    950: '#000000',
  },
}

SCSS

$custom: #040431;
$custom-light: #4b4869;
$custom-dark: #000000;

JSON

{
  "hex": "#040431",
  "rgb": {
    "r": 4,
    "g": 4,
    "b": 49
  },
  "hsl": {
    "h": 240,
    "s": 84.906,
    "l": 10.392
  },
  "oklch": {
    "l": 0.15819,
    "c": 0.08706,
    "h": 270.6
  },
  "luminance": 0.00334
}

Semantic roles & 50–950 ramp

primary

#040431

secondary

#73731D

accent

#FB2DFB

background

#F4F4F6

surface

#E7E6EB

border

#C3C2C6

text

#010006

muted

#77777A

Preview Lab

Preview with #040431

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

Preview Lab → · Contrast checker → · Palette generator →