#040025#040025

#040025 is a very dark, moderate blue. Relative luminance 0.002; OKLCH L 12.7% C 0.079 H 276.2°. Best body text is #FFFFFF at 20.35:1 contrast (WCAG AA passes).

Color values

HEX	#040025
RGB	rgb(4, 0, 37)
HSL	hsl(246, 100%, 7%)
HSV	hsv(246, 100%, 15%)
CMYK	cmyk(89.2%, 100%, 0%, 85.5%)
CIE-LAB	lab(1.44, 9.52, -20.51)
CIE-LCH	lch(1.44, 22.61, 294.91°)
OKLab	oklab(12.68% 0.0085 -0.0785)
OKLCH	oklch(12.68% 0.079 276.2)
XYZ	xyz(0.3839, 0.1593, 1.7604)
Luminance	0.0016 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#040025 #212500

analogous

#000F25 #040025 #170025

triadic

#040025 #250400 #002504

tetradic

#040025 #25000F #212500 #002517

square

#040025 #25000F #212500 #002517

split-complementary

#040025 #251700 #0F2500

monochromatic

#03001F #03001F #040025 #0B0062 #11009F

Accessibility & contrast

On white

20.35

#040025 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.03

#040025 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #040025

20.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##040025	#FFFFFF	#000000	##FFFFFF
##040025	1.00	20.35	1.03	20.35
#FFFFFF	20.35	1.00	21.00	1.00
#000000	1.03	21.00	1.00	21.00
##FFFFFF	20.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#000726

Deuteranopia (green-blind)

#000424

Tritanopia (blue-blind)

#000911

Achromatopsia (no color)

#050505

Design tokens & code

CSS

--color: #040025;
/* rgb */ color: rgb(4, 0, 37);
/* oklch */ color: oklch(12.7% 0.079 276.2);

Tailwind

colors: {
  custom: {
    50: '#48475f',
    500: '#040025',
    950: '#000000',
  },
}

SCSS

$custom: #040025;
$custom-light: #48475f;
$custom-dark: #000000;

JSON

{
  "hex": "#040025",
  "rgb": {
    "r": 4,
    "g": 0,
    "b": 37
  },
  "hsl": {
    "h": 246.486,
    "s": 100,
    "l": 7.255
  },
  "oklch": {
    "l": 0.12681,
    "c": 0.07895,
    "h": 276.2
  },
  "luminance": 0.00159
}

Semantic roles & 50–950 ramp

primary

#040025

secondary

#646D13

accent

#FF29E8

background

#F4F3F5

surface

#E6E5E9

border

#C2C1C5

text

#010004

muted

#777779

Preview Lab

Preview with #040025

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

Preview Lab → · Contrast checker → · Palette generator →