#172D66#172D66

#172D66 is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.6% C 0.104 H 265.0°. Best body text is #FFFFFF at 13.10:1 contrast (WCAG AA passes).

Color values

HEX	#172D66
RGB	rgb(23, 45, 102)
HSL	hsl(223, 63%, 25%)
HSV	hsv(223, 77%, 40%)
CMYK	cmyk(77.5%, 55.9%, 0%, 60%)
CIE-LAB	lab(20.11, 13.62, -36.10)
CIE-LCH	lch(20.11, 38.59, 290.67°)
OKLab	oklab(31.62% -0.009 -0.1039)
OKLCH	oklch(31.62% 0.104 265)
XYZ	xyz(3.6892, 3.0178, 12.9559)
Luminance	0.0302 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D66 #665017

analogous

#175566 #172D66 #291766

triadic

#172D66 #66172D #2D6617

tetradic

#172D66 #661755 #665017 #176629

square

#172D66 #661755 #665017 #176629

split-complementary

#172D66 #662917 #556617

monochromatic

#060B19 #0C1734 #172D66 #224398 #2E59CA

Accessibility & contrast

On white

13.10

#172D66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#172D66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D66

13.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D66	#FFFFFF	#000000	##FFFFFF
##172D66	1.00	13.10	1.60	13.10
#FFFFFF	13.10	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#063468

Deuteranopia (green-blind)

#002D65

Tritanopia (blue-blind)

#003B44

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172d66;
/* rgb */ color: rgb(23, 45, 102);
/* oklch */ color: oklch(31.6% 0.104 265.0);

Tailwind

colors: {
  custom: {
    50: '#606592',
    500: '#172d66',
    950: '#000000',
  },
}

SCSS

$custom: #172d66;
$custom-light: #606592;
$custom-dark: #000000;

JSON

{
  "hex": "#172d66",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 102
  },
  "hsl": {
    "h": 223.291,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.31621,
    "c": 0.10429,
    "h": 265
  },
  "luminance": 0.03018
}

Semantic roles & 50–950 ramp

primary

#172D66

secondary

#9C823C

accent

#B842E6

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05050D

muted

#7A7A7E

Preview Lab

Preview with #172D66

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

Preview Lab → · Contrast checker → · Palette generator →