#040F35#040F35

#040F35 is a very dark, moderate blue. Relative luminance 0.006; OKLCH L 18.9% C 0.077 H 265.3°. Best body text is #FFFFFF at 18.67:1 contrast (WCAG AA passes).

Color values

HEX	#040F35
RGB	rgb(4, 15, 53)
HSL	hsl(227, 86%, 11%)
HSV	hsv(227, 92%, 21%)
CMYK	cmyk(92.5%, 71.7%, 0%, 79.2%)
CIE-LAB	lab(5.64, 11.05, -25.93)
CIE-LCH	lch(5.64, 28.19, 293.07°)
OKLab	oklab(18.87% -0.0062 -0.0764)
OKLCH	oklch(18.87% 0.077 265.3)
XYZ	xyz(0.8633, 0.6244, 3.4425)
Luminance	0.0063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 3.52

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F35 #352A04

analogous

#042735 #040F35 #110435

triadic

#040F35 #35040F #0F3504

tetradic

#040F35 #350427 #352A04 #043511

square

#040F35 #350427 #352A04 #043511

split-complementary

#040F35 #351104 #273504

monochromatic

#02081C #02081C #040F35 #081F6E #0D2FA7

Accessibility & contrast

On white

18.67

#040F35 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.13

#040F35 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F35

18.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F35	#FFFFFF	#000000	##FFFFFF
##040F35	1.00	18.67	1.13	18.67
#FFFFFF	18.67	1.00	21.00	1.00
#000000	1.13	21.00	1.00	21.00
##FFFFFF	18.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001536

Deuteranopia (green-blind)

#001034

Tritanopia (blue-blind)

#001920

Achromatopsia (no color)

#121212

Design tokens & code

CSS

--color: #040f35;
/* rgb */ color: rgb(4, 15, 53);
/* oklch */ color: oklch(18.9% 0.077 265.3);

Tailwind

colors: {
  custom: {
    50: '#4d4d6d',
    500: '#040f35',
    950: '#000000',
  },
}

SCSS

$custom: #040f35;
$custom-light: #4d4d6d;
$custom-dark: #000000;

JSON

{
  "hex": "#040f35",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 53
  },
  "hsl": {
    "h": 226.531,
    "s": 85.965,
    "l": 11.176
  },
  "oklch": {
    "l": 0.18874,
    "c": 0.07666,
    "h": 265.3
  },
  "luminance": 0.00625
}

Semantic roles & 50–950 ramp

primary

#040F35

secondary

#77631E

accent

#CD2CFC

background

#F4F4F6

surface

#E7E7EB

border

#C3C3C6

text

#020107

muted

#78777A

Preview Lab

Preview with #040F35

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

Preview Lab → · Contrast checker → · Palette generator →