#172C74#172C74

#172C74 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.7% C 0.127 H 266.7°. Best body text is #FFFFFF at 12.74:1 contrast (WCAG AA passes).

Color values

HEX	#172C74
RGB	rgb(23, 44, 116)
HSL	hsl(226, 67%, 27%)
HSV	hsv(226, 80%, 45%)
CMYK	cmyk(80.2%, 62.1%, 0%, 54.5%)
CIE-LAB	lab(21.00, 20.14, -43.73)
CIE-LCH	lch(21.00, 48.14, 294.73°)
OKLab	oklab(32.65% -0.0073 -0.1263)
OKLCH	oklch(32.65% 0.127 266.7)
XYZ	xyz(4.4053, 3.2440, 16.9136)
Luminance	0.0324 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C74 #745F17

analogous

#175A74 #172C74 #311774

triadic

#172C74 #74172C #2C7417

tetradic

#172C74 #74175A #745F17 #177431

square

#172C74 #74175A #745F17 #177431

split-complementary

#172C74 #743117 #5A7417

monochromatic

#050A1A #0D1941 #172C74 #213FA7 #3055D6

Accessibility & contrast

On white

12.74

#172C74 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#172C74 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C74

12.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C74	#FFFFFF	#000000	##FFFFFF
##172C74	1.00	12.74	1.65	12.74
#FFFFFF	12.74	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003776

Deuteranopia (green-blind)

#002E73

Tritanopia (blue-blind)

#003E4B

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172c74;
/* rgb */ color: rgb(23, 44, 116);
/* oklch */ color: oklch(32.7% 0.127 266.7);

Tailwind

colors: {
  custom: {
    50: '#64649d',
    500: '#172c74',
    950: '#000000',
  },
}

SCSS

$custom: #172c74;
$custom-light: #64649d;
$custom-dark: #000000;

JSON

{
  "hex": "#172c74",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 116
  },
  "hsl": {
    "h": 226.452,
    "s": 66.906,
    "l": 27.255
  },
  "oklch": {
    "l": 0.32652,
    "c": 0.12653,
    "h": 266.7
  },
  "luminance": 0.03244
}

Semantic roles & 50–950 ramp

primary

#172C74

secondary

#A9913D

accent

#C33EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172C74

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

Preview Lab → · Contrast checker → · Palette generator →