#040A25#040A25

#040A25 is a very dark, muted blue. Relative luminance 0.004; OKLCH L 15.9% C 0.057 H 267.5°. Best body text is #FFFFFF at 19.53:1 contrast (WCAG AA passes).

Color values

HEX	#040A25
RGB	rgb(4, 10, 37)
HSL	hsl(229, 80%, 8%)
HSV	hsv(229, 89%, 15%)
CMYK	cmyk(89.2%, 73%, 0%, 85.5%)
CIE-LAB	lab(3.40, 5.52, -17.47)
CIE-LCH	lch(3.40, 18.32, 287.52°)
OKLab	oklab(15.88% -0.0025 -0.0571)
OKLCH	oklch(15.88% 0.057 267.5)
XYZ	xyz(0.4924, 0.3764, 1.7966)
Luminance	0.0038 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 7.32

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040A25 #251F04

analogous

#041A25 #040A25 #0E0425

triadic

#040A25 #25040A #0A2504

tetradic

#040A25 #25041A #251F04 #04250E

square

#040A25 #25041A #251F04 #04250E

split-complementary

#040A25 #250E04 #1A2504

monochromatic

#03071C #03071C #040A25 #0A195C #102893

Accessibility & contrast

On white

19.53

#040A25 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.08

#040A25 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040A25

19.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040A25	#FFFFFF	#000000	##FFFFFF
##040A25	1.00	19.53	1.08	19.53
#FFFFFF	19.53	1.00	21.00	1.00
#000000	1.08	21.00	1.00	21.00
##FFFFFF	19.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000E26

Deuteranopia (green-blind)

#000B24

Tritanopia (blue-blind)

#001115

Achromatopsia (no color)

#0C0C0C

Design tokens & code

CSS

--color: #040a25;
/* rgb */ color: rgb(4, 10, 37);
/* oklch */ color: oklch(15.9% 0.057 267.5);

Tailwind

colors: {
  custom: {
    50: '#484b5f',
    500: '#040a25',
    950: '#000000',
  },
}

SCSS

$custom: #040a25;
$custom-light: #484b5f;
$custom-dark: #000000;

JSON

{
  "hex": "#040a25",
  "rgb": {
    "r": 4,
    "g": 10,
    "b": 37
  },
  "hsl": {
    "h": 229.091,
    "s": 80.488,
    "l": 8.039
  },
  "oklch": {
    "l": 0.15883,
    "c": 0.05716,
    "h": 267.5
  },
  "luminance": 0.00376
}

Semantic roles & 50–950 ramp

primary

#040A25

secondary

#685A1D

accent

#D331F7

background

#F4F4F5

surface

#E7E7E9

border

#C3C3C5

text

#010104

muted

#777779

Preview Lab

Preview with #040A25

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

Preview Lab → · Contrast checker → · Palette generator →