#172F73#172F73

#172F73 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.2% C 0.121 H 265.4°. Best body text is #FFFFFF at 12.42:1 contrast (WCAG AA passes).

Color values

HEX	#172F73
RGB	rgb(23, 47, 115)
HSL	hsl(224, 67%, 27%)
HSV	hsv(224, 80%, 45%)
CMYK	cmyk(80%, 59.1%, 0%, 54.9%)
CIE-LAB	lab(21.77, 17.58, -41.82)
CIE-LCH	lch(21.77, 45.37, 292.80°)
OKLab	oklab(33.21% -0.0096 -0.1207)
OKLCH	oklch(33.21% 0.121 265.4)
XYZ	xyz(4.4633, 3.4525, 16.6475)
Luminance	0.0345 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F73 #735B17

analogous

#175D73 #172F73 #2D1773

triadic

#172F73 #73172F #2F7317

tetradic

#172F73 #73175D #735B17 #17732D

square

#172F73 #73175D #735B17 #17732D

split-complementary

#172F73 #732D17 #5D7317

monochromatic

#050A1A #0D1A40 #172F73 #2144A6 #2F5AD5

Accessibility & contrast

On white

12.42

#172F73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#172F73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F73

12.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F73	#FFFFFF	#000000	##FFFFFF
##172F73	1.00	12.42	1.69	12.42
#FFFFFF	12.42	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003975

Deuteranopia (green-blind)

#003072

Tritanopia (blue-blind)

#00404C

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172f73;
/* rgb */ color: rgb(23, 47, 115);
/* oklch */ color: oklch(33.2% 0.121 265.4);

Tailwind

colors: {
  custom: {
    50: '#64679c',
    500: '#172f73',
    950: '#000000',
  },
}

SCSS

$custom: #172f73;
$custom-light: #64679c;
$custom-dark: #000000;

JSON

{
  "hex": "#172f73",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 115
  },
  "hsl": {
    "h": 224.348,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.33206,
    "c": 0.12106,
    "h": 265.4
  },
  "luminance": 0.03453
}

Semantic roles & 50–950 ramp

primary

#172F73

secondary

#A98D3D

accent

#BD3EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #172F73

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

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