#040D25#040D25

#040D25 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 16.7% C 0.052 H 263.7°. Best body text is #FFFFFF at 19.28:1 contrast (WCAG AA passes).

Color values

HEX	#040D25
RGB	rgb(4, 13, 37)
HSL	hsl(224, 80%, 8%)
HSV	hsv(224, 89%, 15%)
CMYK	cmyk(89.2%, 64.9%, 0%, 85.5%)
CIE-LAB	lab(4.04, 4.21, -16.48)
CIE-LCH	lch(4.04, 17.01, 284.33°)
OKLab	oklab(16.69% -0.0057 -0.052)
OKLCH	oklch(16.69% 0.052 263.7)
XYZ	xyz(0.5278, 0.4472, 1.8084)
Luminance	0.0045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 8.09

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040D25 #251C04

analogous

#041D25 #040D25 #0B0425

triadic

#040D25 #25040D #0D2504

tetradic

#040D25 #25041D #251C04 #04250B

square

#040D25 #25041D #251C04 #04250B

split-complementary

#040D25 #250B04 #1D2504

monochromatic

#030A1C #030A1C #040D25 #0A205C #103493

Accessibility & contrast

On white

19.28

#040D25 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.09

#040D25 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040D25

19.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040D25	#FFFFFF	#000000	##FFFFFF
##040D25	1.00	19.28	1.09	19.28
#FFFFFF	19.28	1.00	21.00	1.00
#000000	1.09	21.00	1.00	21.00
##FFFFFF	19.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#021026

Deuteranopia (green-blind)

#000D25

Tritanopia (blue-blind)

#001317

Achromatopsia (no color)

#0E0E0E

Design tokens & code

CSS

--color: #040d25;
/* rgb */ color: rgb(4, 13, 37);
/* oklch */ color: oklch(16.7% 0.052 263.7);

Tailwind

colors: {
  custom: {
    50: '#484d5f',
    500: '#040d25',
    950: '#000000',
  },
}

SCSS

$custom: #040d25;
$custom-light: #484d5f;
$custom-dark: #000000;

JSON

{
  "hex": "#040d25",
  "rgb": {
    "r": 4,
    "g": 13,
    "b": 37
  },
  "hsl": {
    "h": 223.636,
    "s": 80.488,
    "l": 8.039
  },
  "oklch": {
    "l": 0.16689,
    "c": 0.05227,
    "h": 263.7
  },
  "luminance": 0.00447
}

Semantic roles & 50–950 ramp

primary

#040D25

secondary

#68531D

accent

#C131F7

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010104

muted

#777779

Preview Lab

Preview with #040D25

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

Preview Lab → · Contrast checker → · Palette generator →