#172E66#172E66

#172E66 is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.9% C 0.103 H 264.5°. Best body text is #FFFFFF at 12.97:1 contrast (WCAG AA passes).

Color values

HEX	#172E66
RGB	rgb(23, 46, 102)
HSL	hsl(223, 63%, 25%)
HSV	hsv(223, 77%, 40%)
CMYK	cmyk(77.5%, 54.9%, 0%, 60%)
CIE-LAB	lab(20.42, 12.89, -35.61)
CIE-LCH	lch(20.42, 37.87, 289.90°)
OKLab	oklab(31.85% -0.0099 -0.1024)
OKLCH	oklch(31.85% 0.103 264.5)
XYZ	xyz(3.7278, 3.0951, 12.9687)
Luminance	0.0309 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E66 #664F17

analogous

#175666 #172E66 #281766

triadic

#172E66 #66172E #2E6617

tetradic

#172E66 #661756 #664F17 #176628

square

#172E66 #661756 #664F17 #176628

split-complementary

#172E66 #662817 #566617

monochromatic

#060B19 #0C1734 #172E66 #224598 #2E5BCA

Accessibility & contrast

On white

12.97

#172E66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#172E66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E66

12.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E66	#FFFFFF	#000000	##FFFFFF
##172E66	1.00	12.97	1.62	12.97
#FFFFFF	12.97	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#093568

Deuteranopia (green-blind)

#002E65

Tritanopia (blue-blind)

#003B45

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172e66;
/* rgb */ color: rgb(23, 46, 102);
/* oklch */ color: oklch(31.9% 0.103 264.5);

Tailwind

colors: {
  custom: {
    50: '#606692',
    500: '#172e66',
    950: '#000000',
  },
}

SCSS

$custom: #172e66;
$custom-light: #606692;
$custom-dark: #000000;

JSON

{
  "hex": "#172e66",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 102
  },
  "hsl": {
    "h": 222.532,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.31853,
    "c": 0.1029,
    "h": 264.5
  },
  "luminance": 0.03095
}

Semantic roles & 50–950 ramp

primary

#172E66

secondary

#9C803C

accent

#B642E6

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05050D

muted

#7A7A7E

Preview Lab

Preview with #172E66

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

Preview Lab → · Contrast checker → · Palette generator →