#172C64#172C64

#172C64 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.2% C 0.103 H 265.3°. Best body text is #FFFFFF at 13.28:1 contrast (WCAG AA passes).

Color values

HEX	#172C64
RGB	rgb(23, 44, 100)
HSL	hsl(224, 63%, 24%)
HSV	hsv(224, 77%, 39%)
CMYK	cmyk(77%, 56%, 0%, 60.8%)
CIE-LAB	lab(19.65, 13.52, -35.55)
CIE-LCH	lch(19.65, 38.03, 290.82°)
OKLab	oklab(31.22% -0.0083 -0.1023)
OKLCH	oklch(31.22% 0.103 265.3)
XYZ	xyz(3.5535, 2.9032, 12.4272)
Luminance	0.0290 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C64 #644F17

analogous

#175364 #172C64 #291764

triadic

#172C64 #64172C #2C6417

tetradic

#172C64 #641753 #644F17 #176429

square

#172C64 #641753 #644F17 #176429

split-complementary

#172C64 #642917 #536417

monochromatic

#060B19 #0C1632 #172C64 #224296 #2E58C8

Accessibility & contrast

On white

13.28

#172C64 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.58

#172C64 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C64

13.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C64	#FFFFFF	#000000	##FFFFFF
##172C64	1.00	13.28	1.58	13.28
#FFFFFF	13.28	1.00	21.00	1.00
#000000	1.58	21.00	1.00	21.00
##FFFFFF	13.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#063366

Deuteranopia (green-blind)

#002C63

Tritanopia (blue-blind)

#003943

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172c64;
/* rgb */ color: rgb(23, 44, 100);
/* oklch */ color: oklch(31.2% 0.103 265.3);

Tailwind

colors: {
  custom: {
    50: '#606491',
    500: '#172c64',
    950: '#000000',
  },
}

SCSS

$custom: #172c64;
$custom-light: #606491;
$custom-dark: #000000;

JSON

{
  "hex": "#172c64",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 100
  },
  "hsl": {
    "h": 223.636,
    "s": 62.602,
    "l": 24.118
  },
  "oklch": {
    "l": 0.3122,
    "c": 0.10261,
    "h": 265.3
  },
  "luminance": 0.02904
}

Semantic roles & 50–950 ramp

primary

#172C64

secondary

#9A813C

accent

#B942E6

background

#F6F5F8

surface

#EBEAF0

border

#C6C6CB

text

#05050D

muted

#7A797D

Preview Lab

Preview with #172C64

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

Preview Lab → · Contrast checker → · Palette generator →