#172D72#172D72

#172D72 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.7% C 0.122 H 266.2°. Best body text is #FFFFFF at 12.69:1 contrast (WCAG AA passes).

Color values

HEX	#172D72
RGB	rgb(23, 45, 114)
HSL	hsl(225, 66%, 27%)
HSV	hsv(225, 80%, 45%)
CMYK	cmyk(79.8%, 60.5%, 0%, 55.3%)
CIE-LAB	lab(21.11, 18.60, -42.26)
CIE-LCH	lch(21.11, 46.17, 293.76°)
OKLab	oklab(32.68% -0.0082 -0.122)
OKLCH	oklch(32.68% 0.122 266.2)
XYZ	xyz(4.3279, 3.2734, 16.3200)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D72 #725C17

analogous

#175A72 #172D72 #2F1772

triadic

#172D72 #72172D #2D7217

tetradic

#172D72 #72175A #725C17 #17722F

square

#172D72 #72175A #725C17 #17722F

split-complementary

#172D72 #722F17 #5A7217

monochromatic

#050A19 #0D193F #172D72 #2141A5 #2E57D5

Accessibility & contrast

On white

12.69

#172D72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#172D72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D72

12.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D72	#FFFFFF	#000000	##FFFFFF
##172D72	1.00	12.69	1.65	12.69
#FFFFFF	12.69	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003774

Deuteranopia (green-blind)

#002F71

Tritanopia (blue-blind)

#003E4A

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172d72;
/* rgb */ color: rgb(23, 45, 114);
/* oklch */ color: oklch(32.7% 0.122 266.2);

Tailwind

colors: {
  custom: {
    50: '#64659b',
    500: '#172d72',
    950: '#000000',
  },
}

SCSS

$custom: #172d72;
$custom-light: #64659b;
$custom-dark: #000000;

JSON

{
  "hex": "#172d72",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 114
  },
  "hsl": {
    "h": 225.495,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.32681,
    "c": 0.12227,
    "h": 266.2
  },
  "luminance": 0.03274
}

Semantic roles & 50–950 ramp

primary

#172D72

secondary

#A88E3D

accent

#C03EE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172D72

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

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