#172D85#172D85

#172D85 is a dark, vivid blue. Relative luminance 0.038; OKLCH L 34.5% C 0.149 H 266.9°. Best body text is #FFFFFF at 12.00:1 contrast (WCAG AA passes).

Color values

HEX	#172D85
RGB	rgb(23, 45, 133)
HSL	hsl(228, 71%, 31%)
HSV	hsv(228, 83%, 52%)
CMYK	cmyk(82.7%, 66.2%, 0%, 47.8%)
CIE-LAB	lab(22.83, 26.29, -51.50)
CIE-LCH	lch(22.83, 57.82, 297.05°)
OKLab	oklab(34.5% -0.0081 -0.1491)
OKLCH	oklch(34.5% 0.149 266.9)
XYZ	xyz(5.5239, 3.7517, 22.6188)
Luminance	0.0375 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D85 #856F17

analogous

#176485 #172D85 #381785

triadic

#172D85 #85172D #2D8517

tetradic

#172D85 #851764 #856F17 #178538

square

#172D85 #851764 #856F17 #178538

split-complementary

#172D85 #853817 #648517

monochromatic

#050A1D #0E1B51 #172D85 #203FB9 #3A5ADD

Accessibility & contrast

On white

12.00

#172D85 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#172D85 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D85

12.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D85	#FFFFFF	#000000	##FFFFFF
##172D85	1.00	12.00	1.75	12.00
#FFFFFF	12.00	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003C88

Deuteranopia (green-blind)

#003183

Tritanopia (blue-blind)

#004454

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #172d85;
/* rgb */ color: rgb(23, 45, 133);
/* oklch */ color: oklch(34.5% 0.149 266.9);

Tailwind

colors: {
  custom: {
    50: '#6965a9',
    500: '#172d85',
    950: '#000000',
  },
}

SCSS

$custom: #172d85;
$custom-light: #6965a9;
$custom-dark: #000000;

JSON

{
  "hex": "#172d85",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 133
  },
  "hsl": {
    "h": 228,
    "s": 70.513,
    "l": 30.588
  },
  "oklch": {
    "l": 0.34497,
    "c": 0.14929,
    "h": 266.9
  },
  "luminance": 0.03752
}

Semantic roles & 50–950 ramp

primary

#172D85

secondary

#B9A13F

accent

#CA3BED

background

#F6F6FA

surface

#ECEBF4

border

#C7C6CE

text

#070510

muted

#7A7A7F

Preview Lab

Preview with #172D85

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

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