#172F72#172F72

#172F72 is a dark, moderate blue. Relative luminance 0.034; OKLCH L 33.1% C 0.120 H 265.3°. Best body text is #FFFFFF at 12.46:1 contrast (WCAG AA passes).

Color values

HEX	#172F72
RGB	rgb(23, 47, 114)
HSL	hsl(224, 66%, 27%)
HSV	hsv(224, 80%, 45%)
CMYK	cmyk(79.8%, 58.8%, 0%, 55.3%)
CIE-LAB	lab(21.69, 17.17, -41.32)
CIE-LCH	lch(21.69, 44.74, 292.56°)
OKLab	oklab(33.12% -0.0097 -0.1192)
OKLCH	oklch(33.12% 0.12 265.3)
XYZ	xyz(4.4061, 3.4296, 16.3461)
Luminance	0.0343 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F72 #725A17

analogous

#175D72 #172F72 #2D1772

triadic

#172F72 #72172F #2F7217

tetradic

#172F72 #72175D #725A17 #17722D

square

#172F72 #72175D #725A17 #17722D

split-complementary

#172F72 #722D17 #5D7217

monochromatic

#050A19 #0D1A3F #172F72 #2144A5 #2E5AD5

Accessibility & contrast

On white

12.46

#172F72 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#172F72 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F72

12.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F72	#FFFFFF	#000000	##FFFFFF
##172F72	1.00	12.46	1.69	12.46
#FFFFFF	12.46	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003874

Deuteranopia (green-blind)

#003071

Tritanopia (blue-blind)

#00404B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172f72;
/* rgb */ color: rgb(23, 47, 114);
/* oklch */ color: oklch(33.1% 0.120 265.3);

Tailwind

colors: {
  custom: {
    50: '#64679b',
    500: '#172f72',
    950: '#000000',
  },
}

SCSS

$custom: #172f72;
$custom-light: #64679b;
$custom-dark: #000000;

JSON

{
  "hex": "#172f72",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 114
  },
  "hsl": {
    "h": 224.176,
    "s": 66.423,
    "l": 26.863
  },
  "oklch": {
    "l": 0.33117,
    "c": 0.11958,
    "h": 265.3
  },
  "luminance": 0.0343
}

Semantic roles & 50–950 ramp

primary

#172F72

secondary

#A88C3D

accent

#BC3EE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #172F72

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

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