#040A35#040A35

#040A35 is a very dark, moderate blue. Relative luminance 0.005; OKLCH L 17.8% C 0.084 H 267.9°. Best body text is #FFFFFF at 19.09:1 contrast (WCAG AA passes).

Color values

HEX	#040A35
RGB	rgb(4, 10, 53)
HSL	hsl(233, 86%, 11%)
HSV	hsv(233, 92%, 21%)
CMYK	cmyk(92.5%, 81.1%, 0%, 79.2%)
CIE-LAB	lab(4.51, 13.35, -27.74)
CIE-LCH	lch(4.51, 30.79, 295.70°)
OKLab	oklab(17.75% -0.0031 -0.0838)
OKLCH	oklch(17.75% 0.084 267.9)
XYZ	xyz(0.8010, 0.4998, 3.4217)
Luminance	0.0050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A35 #352F04

analogous

#042235 #040A35 #160435

triadic

#040A35 #35040A #0A3504

tetradic

#040A35 #350422 #352F04 #043516

square

#040A35 #350422 #352F04 #043516

split-complementary

#040A35 #351604 #223504

monochromatic

#02051C #02051C #040A35 #08156E #0D1FA7

Accessibility & contrast

On white

19.09

#040A35 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040A35 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A35

19.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A35	#FFFFFF	#000000	##FFFFFF
##040A35	1.00	19.09	1.10	19.09
#FFFFFF	19.09	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001236

Deuteranopia (green-blind)

#000D34

Tritanopia (blue-blind)

#00161E

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040a35;
/* rgb */ color: rgb(4, 10, 53);
/* oklch */ color: oklch(17.8% 0.084 267.9);

Tailwind

colors: {
  custom: {
    50: '#4c4a6d',
    500: '#040a35',
    950: '#000000',
  },
}

SCSS

$custom: #040a35;
$custom-light: #4c4a6d;
$custom-dark: #000000;

JSON

{
  "hex": "#040a35",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 53
  },
  "hsl": {
    "h": 232.653,
    "s": 85.965,
    "l": 11.176
  },
  "oklch": {
    "l": 0.17751,
    "c": 0.08384,
    "h": 267.9
  },
  "luminance": 0.005
}

Semantic roles & 50–950 ramp

primary

#040A35

secondary

#776C1E

accent

#E32CFC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020107

muted

#78777A

Preview Lab

Preview with #040A35

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

Preview Lab → · Contrast checker → · Palette generator →