#172C72#172C72

#172C72 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.5% C 0.124 H 266.6°. Best body text is #FFFFFF at 12.81:1 contrast (WCAG AA passes).

Color values

HEX	#172C72
RGB	rgb(23, 44, 114)
HSL	hsl(226, 66%, 27%)
HSV	hsv(226, 80%, 45%)
CMYK	cmyk(79.8%, 61.4%, 0%, 55.3%)
CIE-LAB	lab(20.82, 19.32, -42.73)
CIE-LCH	lch(20.82, 46.89, 294.33°)
OKLab	oklab(32.47% -0.0074 -0.1234)
OKLCH	oklch(32.47% 0.124 266.6)
XYZ	xyz(4.2902, 3.1979, 16.3075)
Luminance	0.0320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C72 #725D17

analogous

#175A72 #172C72 #301772

triadic

#172C72 #72172C #2C7217

tetradic

#172C72 #72175A #725D17 #177230

square

#172C72 #72175A #725D17 #177230

split-complementary

#172C72 #723017 #5A7217

monochromatic

#050A19 #0D183F #172C72 #2140A5 #2E55D5

Accessibility & contrast

On white

12.81

#172C72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#172C72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C72

12.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C72	#FFFFFF	#000000	##FFFFFF
##172C72	1.00	12.81	1.64	12.81
#FFFFFF	12.81	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003674

Deuteranopia (green-blind)

#002E71

Tritanopia (blue-blind)

#003E4A

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172c72;
/* rgb */ color: rgb(23, 44, 114);
/* oklch */ color: oklch(32.5% 0.124 266.6);

Tailwind

colors: {
  custom: {
    50: '#64649b',
    500: '#172c72',
    950: '#000000',
  },
}

SCSS

$custom: #172c72;
$custom-light: #64649b;
$custom-dark: #000000;

JSON

{
  "hex": "#172c72",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 114
  },
  "hsl": {
    "h": 226.154,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.32466,
    "c": 0.12361,
    "h": 266.6
  },
  "luminance": 0.03198
}

Semantic roles & 50–950 ramp

primary

#172C72

secondary

#A88F3D

accent

#C23EE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172C72

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

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