#172C75#172C75

#172C75 is a dark, vivid blue. Relative luminance 0.033; OKLCH L 32.7% C 0.128 H 266.7°. Best body text is #FFFFFF at 12.70:1 contrast (WCAG AA passes).

Color values

HEX	#172C75
RGB	rgb(23, 44, 117)
HSL	hsl(227, 67%, 27%)
HSV	hsv(227, 80%, 46%)
CMYK	cmyk(80.3%, 62.4%, 0%, 54.1%)
CIE-LAB	lab(21.08, 20.55, -44.22)
CIE-LCH	lch(21.08, 48.76, 294.92°)
OKLab	oklab(32.75% -0.0073 -0.1278)
OKLCH	oklch(32.75% 0.128 266.7)
XYZ	xyz(4.4638, 3.2674, 17.2216)
Luminance	0.0327 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C75 #756017

analogous

#175B75 #172C75 #311775

triadic

#172C75 #75172C #2C7517

tetradic

#172C75 #75175B #756017 #177531

square

#172C75 #75175B #756017 #177531

split-complementary

#172C75 #753117 #5B7517

monochromatic

#050A1A #0D1942 #172C75 #213FA8 #3055D6

Accessibility & contrast

On white

12.70

#172C75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.65

#172C75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C75

12.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C75	#FFFFFF	#000000	##FFFFFF
##172C75	1.00	12.70	1.65	12.70
#FFFFFF	12.70	1.00	21.00	1.00
#000000	1.65	21.00	1.00	21.00
##FFFFFF	12.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003777

Deuteranopia (green-blind)

#002E74

Tritanopia (blue-blind)

#003F4C

Achromatopsia (no color)

#333333

Design tokens & code

CSS

--color: #172c75;
/* rgb */ color: rgb(23, 44, 117);
/* oklch */ color: oklch(32.7% 0.128 266.7);

Tailwind

colors: {
  custom: {
    50: '#65649d',
    500: '#172c75',
    950: '#000000',
  },
}

SCSS

$custom: #172c75;
$custom-light: #65649d;
$custom-dark: #000000;

JSON

{
  "hex": "#172c75",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 117
  },
  "hsl": {
    "h": 226.596,
    "s": 67.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.32746,
    "c": 0.12798,
    "h": 266.7
  },
  "luminance": 0.03268
}

Semantic roles & 50–950 ramp

primary

#172C75

secondary

#AA923D

accent

#C43EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172C75

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

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