#172F79#172F79

#172F79 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.8% C 0.130 H 265.9°. Best body text is #FFFFFF at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#172F79
RGB	rgb(23, 47, 121)
HSL	hsl(225, 68%, 28%)
HSV	hsv(225, 81%, 47%)
CMYK	cmyk(81%, 61.2%, 0%, 52.5%)
CIE-LAB	lab(22.29, 20.05, -44.82)
CIE-LCH	lch(22.29, 49.09, 294.10°)
OKLab	oklab(33.75% -0.0094 -0.1295)
OKLCH	oklch(33.75% 0.13 265.9)
XYZ	xyz(4.8198, 3.5951, 18.5254)
Luminance	0.0360 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F79 #796117

analogous

#176079 #172F79 #301779

triadic

#172F79 #79172F #2F7917

tetradic

#172F79 #791760 #796117 #177930

square

#172F79 #791760 #796117 #177930

split-complementary

#172F79 #793017 #607917

monochromatic

#050A1A #0D1B46 #172F79 #2143AC #325BD8

Accessibility & contrast

On white

12.21

#172F79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#172F79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F79

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F79	#FFFFFF	#000000	##FFFFFF
##172F79	1.00	12.21	1.72	12.21
#FFFFFF	12.21	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7B

Deuteranopia (green-blind)

#003178

Tritanopia (blue-blind)

#00424F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172f79;
/* rgb */ color: rgb(23, 47, 121);
/* oklch */ color: oklch(33.8% 0.130 265.9);

Tailwind

colors: {
  custom: {
    50: '#6567a0',
    500: '#172f79',
    950: '#000000',
  },
}

SCSS

$custom: #172f79;
$custom-light: #6567a0;
$custom-dark: #000000;

JSON

{
  "hex": "#172f79",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 121
  },
  "hsl": {
    "h": 225.306,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.33752,
    "c": 0.12981,
    "h": 265.9
  },
  "luminance": 0.03596
}

Semantic roles & 50–950 ramp

primary

#172F79

secondary

#AE933E

accent

#C03DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07060F

muted

#7A7A7E

Preview Lab

Preview with #172F79

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

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