#172C66#172C66

#172C66 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 31.4% C 0.106 H 265.6°. Best body text is #FFFFFF at 13.22:1 contrast (WCAG AA passes).

Color values

HEX	#172C66
RGB	rgb(23, 44, 102)
HSL	hsl(224, 63%, 25%)
HSV	hsv(224, 77%, 40%)
CMYK	cmyk(77.5%, 56.9%, 0%, 60%)
CIE-LAB	lab(19.81, 14.35, -36.59)
CIE-LCH	lch(19.81, 39.31, 291.41°)
OKLab	oklab(31.39% -0.0081 -0.1054)
OKLCH	oklch(31.39% 0.106 265.6)
XYZ	xyz(3.6515, 2.9424, 12.9433)
Luminance	0.0294 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C66 #665117

analogous

#175466 #172C66 #2A1766

triadic

#172C66 #66172C #2C6617

tetradic

#172C66 #661754 #665117 #17662A

square

#172C66 #661754 #665117 #17662A

split-complementary

#172C66 #662A17 #546617

monochromatic

#060B19 #0C1634 #172C66 #224298 #2E57CA

Accessibility & contrast

On white

13.22

#172C66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#172C66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C66

13.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C66	#FFFFFF	#000000	##FFFFFF
##172C66	1.00	13.22	1.59	13.22
#FFFFFF	13.22	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#023468

Deuteranopia (green-blind)

#002C65

Tritanopia (blue-blind)

#003A44

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #172c66;
/* rgb */ color: rgb(23, 44, 102);
/* oklch */ color: oklch(31.4% 0.106 265.6);

Tailwind

colors: {
  custom: {
    50: '#616492',
    500: '#172c66',
    950: '#000000',
  },
}

SCSS

$custom: #172c66;
$custom-light: #616492;
$custom-dark: #000000;

JSON

{
  "hex": "#172c66",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 102
  },
  "hsl": {
    "h": 224.051,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.31391,
    "c": 0.10567,
    "h": 265.6
  },
  "luminance": 0.02943
}

Semantic roles & 50–950 ramp

primary

#172C66

secondary

#9C833C

accent

#BA42E6

background

#F6F5F9

surface

#EBEAF1

border

#C6C6CB

text

#05050D

muted

#7A797E

Preview Lab

Preview with #172C66

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

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