#172D63#172D63

#172D63 is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.4% C 0.100 H 264.6°. Best body text is #FFFFFF at 13.19:1 contrast (WCAG AA passes).

Color values

HEX	#172D63
RGB	rgb(23, 45, 99)
HSL	hsl(223, 62%, 24%)
HSV	hsv(223, 77%, 39%)
CMYK	cmyk(76.8%, 54.5%, 0%, 61.2%)
CIE-LAB	lab(19.88, 12.37, -34.52)
CIE-LCH	lch(19.88, 36.67, 289.71°)
OKLab	oklab(31.37% -0.0094 -0.0992)
OKLCH	oklch(31.37% 0.1 264.6)
XYZ	xyz(3.5431, 2.9594, 12.1865)
Luminance	0.0296 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D63 #634D17

analogous

#175363 #172D63 #271763

triadic

#172D63 #63172D #2D6317

tetradic

#172D63 #631753 #634D17 #176327

square

#172D63 #631753 #634D17 #176327

split-complementary

#172D63 #632717 #536317

monochromatic

#060B19 #0B1631 #172D63 #234495 #2E5AC6

Accessibility & contrast

On white

13.19

#172D63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#172D63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D63

13.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D63	#FFFFFF	#000000	##FFFFFF
##172D63	1.00	13.19	1.59	13.19
#FFFFFF	13.19	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0B3465

Deuteranopia (green-blind)

#002D62

Tritanopia (blue-blind)

#003A43

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172d63;
/* rgb */ color: rgb(23, 45, 99);
/* oklch */ color: oklch(31.4% 0.100 264.6);

Tailwind

colors: {
  custom: {
    50: '#606590',
    500: '#172d63',
    950: '#000000',
  },
}

SCSS

$custom: #172d63;
$custom-light: #606590;
$custom-dark: #000000;

JSON

{
  "hex": "#172d63",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 99
  },
  "hsl": {
    "h": 222.632,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.31368,
    "c": 0.09968,
    "h": 264.6
  },
  "luminance": 0.0296
}

Semantic roles & 50–950 ramp

primary

#172D63

secondary

#9A7F3C

accent

#B642E5

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05050C

muted

#797A7D

Preview Lab

Preview with #172D63

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

Preview Lab → · Contrast checker → · Palette generator →