#172F66#172F66

#172F66 is a dark, moderate blue. Relative luminance 0.032; OKLCH L 32.1% C 0.102 H 263.9°. Best body text is #FFFFFF at 12.85:1 contrast (WCAG AA passes).

Color values

HEX	#172F66
RGB	rgb(23, 47, 102)
HSL	hsl(222, 63%, 25%)
HSV	hsv(222, 77%, 40%)
CMYK	cmyk(77.5%, 53.9%, 0%, 60%)
CIE-LAB	lab(20.73, 12.17, -35.11)
CIE-LCH	lch(20.73, 37.16, 289.11°)
OKLab	oklab(32.09% -0.0109 -0.1009)
OKLCH	oklch(32.09% 0.102 263.9)
XYZ	xyz(3.7673, 3.1741, 12.9819)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F66 #664E17

analogous

#175766 #172F66 #271766

triadic

#172F66 #66172F #2F6617

tetradic

#172F66 #661757 #664E17 #176627

square

#172F66 #661757 #664E17 #176627

split-complementary

#172F66 #662717 #576617

monochromatic

#060C19 #0C1834 #172F66 #224698 #2E5DCA

Accessibility & contrast

On white

12.85

#172F66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#172F66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F66

12.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F66	#FFFFFF	#000000	##FFFFFF
##172F66	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)

#0D3668

Deuteranopia (green-blind)

#002E65

Tritanopia (blue-blind)

#003C45

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172f66;
/* rgb */ color: rgb(23, 47, 102);
/* oklch */ color: oklch(32.1% 0.102 263.9);

Tailwind

colors: {
  custom: {
    50: '#606792',
    500: '#172f66',
    950: '#000000',
  },
}

SCSS

$custom: #172f66;
$custom-light: #606792;
$custom-dark: #000000;

JSON

{
  "hex": "#172f66",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 102
  },
  "hsl": {
    "h": 221.772,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.32086,
    "c": 0.10152,
    "h": 263.9
  },
  "luminance": 0.03174
}

Semantic roles & 50–950 ramp

primary

#172F66

secondary

#9C7F3C

accent

#B442E6

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #172F66

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

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