#172A66#172A66

#172A66 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.9% C 0.108 H 266.6°. Best body text is #FFFFFF at 13.47:1 contrast (WCAG AA passes).

Color values

HEX	#172A66
RGB	rgb(23, 42, 102)
HSL	hsl(226, 63%, 25%)
HSV	hsv(226, 77%, 40%)
CMYK	cmyk(77.5%, 58.8%, 0%, 60%)
CIE-LAB	lab(19.21, 15.81, -37.57)
CIE-LCH	lch(19.21, 40.76, 292.82°)
OKLab	oklab(30.94% -0.0064 -0.1083)
OKLCH	oklch(30.94% 0.108 266.6)
XYZ	xyz(3.5787, 2.7970, 12.9191)
Luminance	0.0280 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A66 #665317

analogous

#175266 #172A66 #2C1766

triadic

#172A66 #66172A #2A6617

tetradic

#172A66 #661752 #665317 #17662C

square

#172A66 #661752 #665317 #17662C

split-complementary

#172A66 #662C17 #526617

monochromatic

#060A19 #0C1534 #172A66 #223F98 #2E53CA

Accessibility & contrast

On white

13.47

#172A66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#172A66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A66

13.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A66	#FFFFFF	#000000	##FFFFFF
##172A66	1.00	13.47	1.56	13.47
#FFFFFF	13.47	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003268

Deuteranopia (green-blind)

#002B65

Tritanopia (blue-blind)

#003943

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172a66;
/* rgb */ color: rgb(23, 42, 102);
/* oklch */ color: oklch(30.9% 0.108 266.6);

Tailwind

colors: {
  custom: {
    50: '#616392',
    500: '#172a66',
    950: '#000000',
  },
}

SCSS

$custom: #172a66;
$custom-light: #616392;
$custom-dark: #000000;

JSON

{
  "hex": "#172a66",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 102
  },
  "hsl": {
    "h": 225.57,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.30938,
    "c": 0.10845,
    "h": 266.6
  },
  "luminance": 0.02797
}

Semantic roles & 50–950 ramp

primary

#172A66

secondary

#9C853C

accent

#BF42E6

background

#F6F5F9

surface

#EBEAF1

border

#C6C6CB

text

#05050D

muted

#7A797E

Preview Lab

Preview with #172A66

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

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