#040F25#040F25

#040F25 is a very dark, muted blue. Relative luminance 0.005; OKLCH L 17.3% C 0.049 H 260.6°. Best body text is #FFFFFF at 19.09:1 contrast (WCAG AA passes).

Color values

HEX	#040F25
RGB	rgb(4, 15, 37)
HSL	hsl(220, 80%, 8%)
HSV	hsv(220, 89%, 15%)
CMYK	cmyk(89.2%, 59.5%, 0%, 85.5%)
CIE-LAB	lab(4.53, 3.22, -15.72)
CIE-LCH	lch(4.53, 16.05, 281.56°)
OKLab	oklab(17.25% -0.008 -0.0484)
OKLCH	oklch(17.25% 0.049 260.6)
XYZ	xyz(0.5547, 0.5010, 1.8174)
Luminance	0.0050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040F25 #251A04

analogous

#041F25 #040F25 #090425

triadic

#040F25 #25040F #0F2504

tetradic

#040F25 #25041F #251A04 #042509

square

#040F25 #25041F #251A04 #042509

split-complementary

#040F25 #250904 #1F2504

monochromatic

#030B1C #030B1C #040F25 #0A255C #103C93

Accessibility & contrast

On white

19.09

#040F25 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.10

#040F25 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040F25

19.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040F25	#FFFFFF	#000000	##FFFFFF
##040F25	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)

#051126

Deuteranopia (green-blind)

#010E25

Tritanopia (blue-blind)

#001418

Achromatopsia (no color)

#101010

Design tokens & code

CSS

--color: #040f25;
/* rgb */ color: rgb(4, 15, 37);
/* oklch */ color: oklch(17.3% 0.049 260.6);

Tailwind

colors: {
  custom: {
    50: '#484e5f',
    500: '#040f25',
    950: '#000000',
  },
}

SCSS

$custom: #040f25;
$custom-light: #484e5f;
$custom-dark: #000000;

JSON

{
  "hex": "#040f25",
  "rgb": {
    "r": 4,
    "g": 15,
    "b": 37
  },
  "hsl": {
    "h": 220,
    "s": 80.488,
    "l": 8.039
  },
  "oklch": {
    "l": 0.17254,
    "c": 0.04907,
    "h": 260.6
  },
  "luminance": 0.00501
}

Semantic roles & 50–950 ramp

primary

#040F25

secondary

#684F1D

accent

#B531F7

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010104

muted

#777779

Preview Lab

Preview with #040F25

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

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