#040F26#040F26

#040F26 is a very dark, muted blue. Relative luminance 0.005; OKLCH L 17.3% C 0.051 H 261.2°. Best body text is #FFFFFF at 19.07:1 contrast (WCAG AA passes).

Color values

HEX	#040F26
RGB	rgb(4, 15, 38)
HSL	hsl(221, 81%, 8%)
HSV	hsv(221, 89%, 15%)
CMYK	cmyk(89.5%, 60.5%, 0%, 85.1%)
CIE-LAB	lab(4.58, 3.62, -16.40)
CIE-LCH	lch(4.58, 16.79, 282.46°)
OKLab	oklab(17.35% -0.0078 -0.0503)
OKLCH	oklch(17.35% 0.051 261.2)
XYZ	xyz(0.5706, 0.5073, 1.9012)
Luminance	0.0051 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F26 #261B04

analogous

#042026 #040F26 #0A0426

triadic

#040F26 #26040F #0F2604

tetradic

#040F26 #260420 #261B04 #04260A

square

#040F26 #260420 #261B04 #04260A

split-complementary

#040F26 #260A04 #202604

monochromatic

#030B1C #030B1C #040F26 #0A255D #103B95

Accessibility & contrast

On white

19.07

#040F26 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040F26 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F26

19.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F26	#FFFFFF	#000000	##FFFFFF
##040F26	1.00	19.07	1.10	19.07
#FFFFFF	19.07	1.00	21.00	1.00
#000000	1.10	21.00	1.00	21.00
##FFFFFF	19.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#041127

Deuteranopia (green-blind)

#000E26

Tritanopia (blue-blind)

#001418

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040f26;
/* rgb */ color: rgb(4, 15, 38);
/* oklch */ color: oklch(17.3% 0.051 261.2);

Tailwind

colors: {
  custom: {
    50: '#484e60',
    500: '#040f26',
    950: '#000000',
  },
}

SCSS

$custom: #040f26;
$custom-light: #484e60;
$custom-dark: #000000;

JSON

{
  "hex": "#040f26",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 38
  },
  "hsl": {
    "h": 220.588,
    "s": 80.952,
    "l": 8.235
  },
  "oklch": {
    "l": 0.17345,
    "c": 0.05087,
    "h": 261.2
  },
  "luminance": 0.00507
}

Semantic roles & 50–950 ramp

primary

#040F26

secondary

#69501D

accent

#B730F7

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010105

muted

#777779

Preview Lab

Preview with #040F26

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

Preview Lab → · Contrast checker → · Palette generator →