#172F7A#172F7A

#172F7A is a dark, vivid blue. Relative luminance 0.036; OKLCH L 33.8% C 0.131 H 265.9°. Best body text is #FFFFFF at 12.18:1 contrast (WCAG AA passes).

Color values

HEX	#172F7A
RGB	rgb(23, 47, 122)
HSL	hsl(225, 68%, 28%)
HSV	hsv(225, 81%, 48%)
CMYK	cmyk(81.1%, 61.5%, 0%, 52.2%)
CIE-LAB	lab(22.37, 20.46, -45.31)
CIE-LCH	lch(22.37, 49.71, 294.30°)
OKLab	oklab(33.84% -0.0093 -0.1309)
OKLCH	oklch(33.84% 0.131 265.9)
XYZ	xyz(4.8815, 3.6198, 18.8500)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F7A #7A6217

analogous

#17607A #172F7A #31177A

triadic

#172F7A #7A172F #2F7A17

tetradic

#172F7A #7A1760 #7A6217 #177A31

square

#172F7A #7A1760 #7A6217 #177A31

split-complementary

#172F7A #7A3117 #607A17

monochromatic

#050A1A #0D1B47 #172F7A #2143AD #335BD9

Accessibility & contrast

On white

12.18

#172F7A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#172F7A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F7A

12.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F7A	#FFFFFF	#000000	##FFFFFF
##172F7A	1.00	12.18	1.72	12.18
#FFFFFF	12.18	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003A7D

Deuteranopia (green-blind)

#003179

Tritanopia (blue-blind)

#00424F

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #172f7a;
/* rgb */ color: rgb(23, 47, 122);
/* oklch */ color: oklch(33.8% 0.131 265.9);

Tailwind

colors: {
  custom: {
    50: '#6667a1',
    500: '#172f7a',
    950: '#000000',
  },
}

SCSS

$custom: #172f7a;
$custom-light: #6667a1;
$custom-dark: #000000;

JSON

{
  "hex": "#172f7a",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 122
  },
  "hsl": {
    "h": 225.455,
    "s": 68.276,
    "l": 28.431
  },
  "oklch": {
    "l": 0.33844,
    "c": 0.13125,
    "h": 265.9
  },
  "luminance": 0.0362
}

Semantic roles & 50–950 ramp

primary

#172F7A

secondary

#AF943E

accent

#C13DEB

background

#F6F6FA

surface

#EBEBF3

border

#C6C6CD

text

#07060F

muted

#7A7A7F

Preview Lab

Preview with #172F7A

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

Preview Lab → · Contrast checker → · Palette generator →