#172A77#172A77

#172A77 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.5% C 0.133 H 267.4°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#172A77
RGB	rgb(23, 42, 119)
HSL	hsl(228, 68%, 28%)
HSV	hsv(228, 81%, 47%)
CMYK	cmyk(80.7%, 64.7%, 0%, 53.3%)
CIE-LAB	lab(20.71, 22.78, -46.11)
CIE-LCH	lch(20.71, 51.43, 296.29°)
OKLab	oklab(32.52% -0.006 -0.1333)
OKLCH	oklch(32.52% 0.133 267.4)
XYZ	xyz(4.5099, 3.1695, 17.8233)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A77 #776417

analogous

#175A77 #172A77 #341777

triadic

#172A77 #77172A #2A7717

tetradic

#172A77 #77175A #776417 #177734

square

#172A77 #77175A #776417 #177734

split-complementary

#172A77 #773417 #5A7717

monochromatic

#05091A #0D1844 #172A77 #213CAA #3152D7

Accessibility & contrast

On white

12.85

#172A77 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#172A77 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A77

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A77	#FFFFFF	#000000	##FFFFFF
##172A77	1.00	12.85	1.63	12.85
#FFFFFF	12.85	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00367A

Deuteranopia (green-blind)

#002D76

Tritanopia (blue-blind)

#003E4C

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172a77;
/* rgb */ color: rgb(23, 42, 119);
/* oklch */ color: oklch(32.5% 0.133 267.4);

Tailwind

colors: {
  custom: {
    50: '#65639f',
    500: '#172a77',
    950: '#000000',
  },
}

SCSS

$custom: #172a77;
$custom-light: #65639f;
$custom-dark: #000000;

JSON

{
  "hex": "#172a77",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 119
  },
  "hsl": {
    "h": 228.125,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.32524,
    "c": 0.13347,
    "h": 267.4
  },
  "luminance": 0.0317
}

Semantic roles & 50–950 ramp

primary

#172A77

secondary

#AC963E

accent

#C83DEA

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#07050F

muted

#7A797E

Preview Lab

Preview with #172A77

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

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