#172A75#172A75

#172A75 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 32.3% C 0.131 H 267.4°. Best body text is #FFFFFF at 12.93:1 contrast (WCAG AA passes).

Color values

HEX	#172A75
RGB	rgb(23, 42, 117)
HSL	hsl(228, 67%, 27%)
HSV	hsv(228, 80%, 46%)
CMYK	cmyk(80.3%, 64.1%, 0%, 54.1%)
CIE-LAB	lab(20.53, 21.97, -45.13)
CIE-LCH	lch(20.53, 50.20, 295.96°)
OKLab	oklab(32.33% -0.0059 -0.1305)
OKLCH	oklch(32.33% 0.131 267.4)
XYZ	xyz(4.3911, 3.1219, 17.1973)
Luminance	0.0312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A75 #756217

analogous

#175975 #172A75 #331775

triadic

#172A75 #75172A #2A7517

tetradic

#172A75 #751759 #756217 #177533

square

#172A75 #751759 #756217 #177533

split-complementary

#172A75 #753317 #597517

monochromatic

#05091A #0D1842 #172A75 #213CA8 #3052D6

Accessibility & contrast

On white

12.93

#172A75 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#172A75 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A75

12.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A75	#FFFFFF	#000000	##FFFFFF
##172A75	1.00	12.93	1.62	12.93
#FFFFFF	12.93	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003677

Deuteranopia (green-blind)

#002D74

Tritanopia (blue-blind)

#003D4B

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172a75;
/* rgb */ color: rgb(23, 42, 117);
/* oklch */ color: oklch(32.3% 0.131 267.4);

Tailwind

colors: {
  custom: {
    50: '#65639d',
    500: '#172a75',
    950: '#000000',
  },
}

SCSS

$custom: #172a75;
$custom-light: #65639d;
$custom-dark: #000000;

JSON

{
  "hex": "#172a75",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 117
  },
  "hsl": {
    "h": 227.872,
    "s": 67.143,
    "l": 27.451
  },
  "oklch": {
    "l": 0.3233,
    "c": 0.13061,
    "h": 267.4
  },
  "luminance": 0.03122
}

Semantic roles & 50–950 ramp

primary

#172A75

secondary

#AA943D

accent

#C73EEA

background

#F6F5F9

surface

#EBEAF2

border

#C6C6CC

text

#06050E

muted

#7A797E

Preview Lab

Preview with #172A75

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

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