#172A5C#172A5C

#172A5C is a dark, moderate blue. Relative luminance 0.026; OKLCH L 30.1% C 0.093 H 265.5°. Best body text is #FFFFFF at 13.80:1 contrast (WCAG AA passes).

Color values

HEX	#172A5C
RGB	rgb(23, 42, 92)
HSL	hsl(223, 60%, 23%)
HSV	hsv(223, 75%, 36%)
CMYK	cmyk(75%, 54.3%, 0%, 63.9%)
CIE-LAB	lab(18.41, 11.64, -32.28)
CIE-LCH	lch(18.41, 34.31, 289.83°)
OKLab	oklab(30.08% -0.0073 -0.0927)
OKLCH	oklch(30.08% 0.093 265.5)
XYZ	xyz(3.1124, 2.6105, 10.4630)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A5C #5C4917

analogous

#174D5C #172A5C #26175C

triadic

#172A5C #5C172A #2A5C17

tetradic

#172A5C #5C174D #5C4917 #175C26

square

#172A5C #5C174D #5C4917 #175C26

split-complementary

#172A5C #5C2617 #4D5C17

monochromatic

#060B18 #0B142B #172A5C #23408D #2F57BE

Accessibility & contrast

On white

13.80

#172A5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#172A5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A5C

13.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A5C	#FFFFFF	#000000	##FFFFFF
##172A5C	1.00	13.80	1.52	13.80
#FFFFFF	13.80	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0C305E

Deuteranopia (green-blind)

#002A5B

Tritanopia (blue-blind)

#00363E

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172a5c;
/* rgb */ color: rgb(23, 42, 92);
/* oklch */ color: oklch(30.1% 0.093 265.5);

Tailwind

colors: {
  custom: {
    50: '#5e638a',
    500: '#172a5c',
    950: '#000000',
  },
}

SCSS

$custom: #172a5c;
$custom-light: #5e638a;
$custom-dark: #000000;

JSON

{
  "hex": "#172a5c",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 92
  },
  "hsl": {
    "h": 223.478,
    "s": 60,
    "l": 22.549
  },
  "oklch": {
    "l": 0.30079,
    "c": 0.09299,
    "h": 265.5
  },
  "luminance": 0.02611
}

Semantic roles & 50–950 ramp

primary

#172A5C

secondary

#937B3C

accent

#B845E3

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #172A5C

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

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