#172D84#172D84

#172D84 is a dark, vivid blue. Relative luminance 0.037; OKLCH L 34.4% C 0.148 H 266.9°. Best body text is #FFFFFF at 12.03:1 contrast (WCAG AA passes).

Color values

HEX	#172D84
RGB	rgb(23, 45, 132)
HSL	hsl(228, 70%, 30%)
HSV	hsv(228, 83%, 52%)
CMYK	cmyk(82.6%, 65.9%, 0%, 48.2%)
CIE-LAB	lab(22.74, 25.89, -51.02)
CIE-LCH	lch(22.74, 57.22, 296.91°)
OKLab	oklab(34.4% -0.0081 -0.1477)
OKLCH	oklch(34.4% 0.148 266.9)
XYZ	xyz(5.4551, 3.7242, 22.2567)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D84 #846E17

analogous

#176384 #172D84 #371784

triadic

#172D84 #84172D #2D8417

tetradic

#172D84 #841763 #846E17 #178437

square

#172D84 #841763 #846E17 #178437

split-complementary

#172D84 #843717 #638417

monochromatic

#05091C #0E1B50 #172D84 #203FB8 #395ADC

Accessibility & contrast

On white

12.03

#172D84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#172D84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D84

12.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D84	#FFFFFF	#000000	##FFFFFF
##172D84	1.00	12.03	1.75	12.03
#FFFFFF	12.03	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C87

Deuteranopia (green-blind)

#003182

Tritanopia (blue-blind)

#004454

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172d84;
/* rgb */ color: rgb(23, 45, 132);
/* oklch */ color: oklch(34.4% 0.148 266.9);

Tailwind

colors: {
  custom: {
    50: '#6965a9',
    500: '#172d84',
    950: '#000000',
  },
}

SCSS

$custom: #172d84;
$custom-light: #6965a9;
$custom-dark: #000000;

JSON

{
  "hex": "#172d84",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 132
  },
  "hsl": {
    "h": 227.89,
    "s": 70.323,
    "l": 30.392
  },
  "oklch": {
    "l": 0.34398,
    "c": 0.14791,
    "h": 266.9
  },
  "luminance": 0.03725
}

Semantic roles & 50–950 ramp

primary

#172D84

secondary

#B8A03F

accent

#C93BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070510

muted

#7A7A7F

Preview Lab

Preview with #172D84

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

Preview Lab → · Contrast checker → · Palette generator →