#172A68#172A68

#172A68 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.1% C 0.111 H 266.8°. Best body text is #FFFFFF at 13.40:1 contrast (WCAG AA passes).

Color values

HEX	#172A68
RGB	rgb(23, 42, 104)
HSL	hsl(226, 64%, 25%)
HSV	hsv(226, 78%, 41%)
CMYK	cmyk(77.9%, 59.6%, 0%, 59.2%)
CIE-LAB	lab(19.38, 16.64, -38.60)
CIE-LCH	lch(19.38, 42.03, 293.32°)
OKLab	oklab(31.12% -0.0062 -0.1113)
OKLCH	oklch(31.12% 0.111 266.8)
XYZ	xyz(3.6791, 2.8372, 13.4477)
Luminance	0.0284 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A68 #685517

analogous

#175368 #172A68 #2D1768

triadic

#172A68 #68172A #2A6817

tetradic

#172A68 #681753 #685517 #17682D

square

#172A68 #681753 #685517 #17682D

split-complementary

#172A68 #682D17 #536817

monochromatic

#060A19 #0C1636 #172A68 #223E9A #2D52CC

Accessibility & contrast

On white

13.40

#172A68 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#172A68 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A68

13.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A68	#FFFFFF	#000000	##FFFFFF
##172A68	1.00	13.40	1.57	13.40
#FFFFFF	13.40	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00336A

Deuteranopia (green-blind)

#002B67

Tritanopia (blue-blind)

#003944

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172a68;
/* rgb */ color: rgb(23, 42, 104);
/* oklch */ color: oklch(31.1% 0.111 266.8);

Tailwind

colors: {
  custom: {
    50: '#616394',
    500: '#172a68',
    950: '#000000',
  },
}

SCSS

$custom: #172a68;
$custom-light: #616394;
$custom-dark: #000000;

JSON

{
  "hex": "#172a68",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 104
  },
  "hsl": {
    "h": 225.926,
    "s": 63.78,
    "l": 24.902
  },
  "oklch": {
    "l": 0.31117,
    "c": 0.11147,
    "h": 266.8
  },
  "luminance": 0.02838
}

Semantic roles & 50–950 ramp

primary

#172A68

secondary

#9E873D

accent

#C041E7

background

#F6F5F9

surface

#EBEAF1

border

#C6C6CB

text

#06050D

muted

#7A797E

Preview Lab

Preview with #172A68

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

Preview Lab → · Contrast checker → · Palette generator →