#172D77#172D77

#172D77 is a dark, vivid blue. Relative luminance 0.034; OKLCH L 33.1% C 0.130 H 266.5°. Best body text is #FFFFFF at 12.51:1 contrast (WCAG AA passes).

Color values

HEX	#172D77
RGB	rgb(23, 45, 119)
HSL	hsl(226, 68%, 28%)
HSV	hsv(226, 81%, 47%)
CMYK	cmyk(80.7%, 62.2%, 0%, 53.3%)
CIE-LAB	lab(21.54, 20.65, -44.75)
CIE-LCH	lch(21.54, 49.29, 294.77°)
OKLab	oklab(33.14% -0.008 -0.1293)
OKLCH	oklch(33.14% 0.13 266.5)
XYZ	xyz(4.6203, 3.3903, 17.8601)
Luminance	0.0339 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D77 #776117

analogous

#175D77 #172D77 #311777

triadic

#172D77 #77172D #2D7717

tetradic

#172D77 #77175D #776117 #177731

square

#172D77 #77175D #776117 #177731

split-complementary

#172D77 #773117 #5D7717

monochromatic

#050A1A #0D1A44 #172D77 #2140AA #3157D7

Accessibility & contrast

On white

12.51

#172D77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.68

#172D77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D77

12.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D77	#FFFFFF	#000000	##FFFFFF
##172D77	1.00	12.51	1.68	12.51
#FFFFFF	12.51	1.00	21.00	1.00
#000000	1.68	21.00	1.00	21.00
##FFFFFF	12.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003879

Deuteranopia (green-blind)

#002F76

Tritanopia (blue-blind)

#00404D

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172d77;
/* rgb */ color: rgb(23, 45, 119);
/* oklch */ color: oklch(33.1% 0.130 266.5);

Tailwind

colors: {
  custom: {
    50: '#65659f',
    500: '#172d77',
    950: '#000000',
  },
}

SCSS

$custom: #172d77;
$custom-light: #65659f;
$custom-dark: #000000;

JSON

{
  "hex": "#172d77",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 119
  },
  "hsl": {
    "h": 226.25,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.33143,
    "c": 0.12956,
    "h": 266.5
  },
  "luminance": 0.03391
}

Semantic roles & 50–950 ramp

primary

#172D77

secondary

#AC933E

accent

#C33DEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172D77

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

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