#172A56#172A56

#172A56 is a dark, moderate blue. Relative luminance 0.025; OKLCH L 29.6% C 0.083 H 264.3°. Best body text is #FFFFFF at 13.98:1 contrast (WCAG AA passes).

Color values

HEX	#172A56
RGB	rgb(23, 42, 86)
HSL	hsl(222, 58%, 21%)
HSV	hsv(222, 73%, 34%)
CMYK	cmyk(73.3%, 51.2%, 0%, 66.3%)
CIE-LAB	lab(17.96, 9.13, -29.00)
CIE-LCH	lch(17.96, 30.41, 287.48°)
OKLab	oklab(29.59% -0.0082 -0.0831)
OKLCH	oklch(29.59% 0.083 264.3)
XYZ	xyz(2.8604, 2.5097, 9.1360)
Luminance	0.0251 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A56 #564317

analogous

#174A56 #172A56 #241756

triadic

#172A56 #56172A #2A5617

tetradic

#172A56 #56174A #564317 #175624

square

#172A56 #56174A #564317 #175624

split-complementary

#172A56 #562417 #4A5617

monochromatic

#060C18 #0A1226 #172A56 #244286 #3159B7

Accessibility & contrast

On white

13.98

#172A56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#172A56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A56

13.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A56	#FFFFFF	#000000	##FFFFFF
##172A56	1.00	13.98	1.50	13.98
#FFFFFF	13.98	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.98	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#132F58

Deuteranopia (green-blind)

#062955

Tritanopia (blue-blind)

#00343B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #172a56;
/* rgb */ color: rgb(23, 42, 86);
/* oklch */ color: oklch(29.6% 0.083 264.3);

Tailwind

colors: {
  custom: {
    50: '#5d6386',
    500: '#172a56',
    950: '#000000',
  },
}

SCSS

$custom: #172a56;
$custom-light: #5d6386;
$custom-dark: #000000;

JSON

{
  "hex": "#172a56",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 86
  },
  "hsl": {
    "h": 221.905,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.29592,
    "c": 0.08347,
    "h": 264.3
  },
  "luminance": 0.0251
}

Semantic roles & 50–950 ramp

primary

#172A56

secondary

#8D753C

accent

#B347E1

background

#F5F5F8

surface

#E9EAEF

border

#C5C6CA

text

#04050B

muted

#79797C

Preview Lab

Preview with #172A56

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

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