Prussian Blue#004577

#004577 is a dark, moderate cyan. Relative luminance 0.056; OKLCH L 38.2% C 0.104 H 248.5°. Best body text is #FFFFFF at 9.92:1 contrast (WCAG AA passes).

Prussian Blue — editorial page

Color values

HEX	#004577
RGB	rgb(0, 69, 119)
HSL	hsl(205, 100%, 23%)
HSV	hsv(205, 100%, 47%)
CMYK	cmyk(100%, 42%, 0%, 53.3%)
CIE-LAB	lab(28.35, 1.74, -33.79)
CIE-LCH	lch(28.35, 33.84, 272.94°)
OKLab	oklab(38.2% -0.0382 -0.0968)
OKLCH	oklch(38.2% 0.104 248.5)
XYZ	xyz(5.4566, 5.5874, 18.2401)
Luminance	0.0559 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#004577 #773200

analogous

#00776D #004577 #000A77

triadic

#004577 #770045 #457700

tetradic

#004577 #6D0077 #773200 #0A7700

square

#004577 #6D0077 #773200 #0A7700

split-complementary

#004577 #77000A #776D00

monochromatic

#00121F #00223A #004577 #0068B4 #008CF1

Accessibility & contrast

On white

9.92

#004577 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.12

#004577 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #004577

9.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##004577	#FFFFFF	#000000	##FFFFFF
##004577	1.00	9.92	2.12	9.92
#FFFFFF	9.92	1.00	21.00	1.00
#000000	2.12	21.00	1.00	21.00
##FFFFFF	9.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C4879

Deuteranopia (green-blind)

#183E76

Tritanopia (blue-blind)

#005158

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #004577;
/* rgb */ color: rgb(0, 69, 119);
/* oklch */ color: oklch(38.2% 0.104 248.5);

Tailwind

colors: {
  custom: {
    50: '#5f789e',
    500: '#004577',
    950: '#000000',
  },
}

SCSS

$custom: #004577;
$custom-light: #5f789e;
$custom-dark: #000000;

JSON

{
  "hex": "#004577",
  "rgb": {
    "r": 0,
    "g": 69,
    "b": 119
  },
  "hsl": {
    "h": 205.21,
    "s": 100,
    "l": 23.333
  },
  "oklch": {
    "l": 0.38198,
    "c": 0.10406,
    "h": 248.5
  },
  "luminance": 0.05588
}

Semantic roles & 50–950 ramp

primary

#004577

secondary

#B35E20

accent

#8329FF

background

#F6F7F9

surface

#EBEDF2

border

#C6C8CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #004577

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

Preview Lab → · Contrast checker → · Palette generator →