#172C63#172C63

#172C63 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.1% C 0.101 H 265.2°. Best body text is #FFFFFF at 13.32:1 contrast (WCAG AA passes).

Color values

HEX	#172C63
RGB	rgb(23, 44, 99)
HSL	hsl(223, 62%, 24%)
HSV	hsv(223, 77%, 39%)
CMYK	cmyk(76.8%, 55.6%, 0%, 61.2%)
CIE-LAB	lab(19.57, 13.10, -35.02)
CIE-LCH	lch(19.57, 37.39, 290.51°)
OKLab	oklab(31.14% -0.0084 -0.1007)
OKLCH	oklch(31.14% 0.101 265.2)
XYZ	xyz(3.5054, 2.8840, 12.1739)
Luminance	0.0288 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C63 #634E17

analogous

#175263 #172C63 #281763

triadic

#172C63 #63172C #2C6317

tetradic

#172C63 #631752 #634E17 #176328

square

#172C63 #631752 #634E17 #176328

split-complementary

#172C63 #632817 #526317

monochromatic

#060B19 #0B1631 #172C63 #234295 #2E58C6

Accessibility & contrast

On white

13.32

#172C63 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#172C63 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C63

13.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C63	#FFFFFF	#000000	##FFFFFF
##172C63	1.00	13.32	1.58	13.32
#FFFFFF	13.32	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#073365

Deuteranopia (green-blind)

#002C62

Tritanopia (blue-blind)

#003943

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172c63;
/* rgb */ color: rgb(23, 44, 99);
/* oklch */ color: oklch(31.1% 0.101 265.2);

Tailwind

colors: {
  custom: {
    50: '#606490',
    500: '#172c63',
    950: '#000000',
  },
}

SCSS

$custom: #172c63;
$custom-light: #606490;
$custom-dark: #000000;

JSON

{
  "hex": "#172c63",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 99
  },
  "hsl": {
    "h": 223.421,
    "s": 62.295,
    "l": 23.922
  },
  "oklch": {
    "l": 0.31135,
    "c": 0.10107,
    "h": 265.2
  },
  "luminance": 0.02884
}

Semantic roles & 50–950 ramp

primary

#172C63

secondary

#9A803C

accent

#B842E5

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050C

muted

#7A797D

Preview Lab

Preview with #172C63

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

Preview Lab → · Contrast checker → · Palette generator →