#172A52#172A52

#172A52 is a dark, moderate blue. Relative luminance 0.024; OKLCH L 29.3% C 0.077 H 263.3°. Best body text is #FFFFFF at 14.10:1 contrast (WCAG AA passes).

Color values

HEX	#172A52
RGB	rgb(23, 42, 82)
HSL	hsl(221, 56%, 21%)
HSV	hsv(221, 72%, 32%)
CMYK	cmyk(72%, 48.8%, 0%, 67.8%)
CIE-LAB	lab(17.68, 7.47, -26.77)
CIE-LCH	lch(17.68, 27.80, 285.59°)
OKLab	oklab(29.28% -0.009 -0.0765)
OKLCH	oklch(29.28% 0.077 263.3)
XYZ	xyz(2.7038, 2.4470, 8.3108)
Luminance	0.0245 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A52 #523F17

analogous

#174752 #172A52 #211752

triadic

#172A52 #52172A #2A5217

tetradic

#172A52 #521747 #523F17 #175221

square

#172A52 #521747 #523F17 #175221

split-complementary

#172A52 #522117 #475217

monochromatic

#070C18 #0A1222 #172A52 #244282 #325BB2

Accessibility & contrast

On white

14.10

#172A52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#172A52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A52

14.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A52	#FFFFFF	#000000	##FFFFFF
##172A52	1.00	14.10	1.49	14.10
#FFFFFF	14.10	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#172E54

Deuteranopia (green-blind)

#0C2951

Tritanopia (blue-blind)

#00333A

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #172a52;
/* rgb */ color: rgb(23, 42, 82);
/* oklch */ color: oklch(29.3% 0.077 263.3);

Tailwind

colors: {
  custom: {
    50: '#5c6383',
    500: '#172a52',
    950: '#000000',
  },
}

SCSS

$custom: #172a52;
$custom-light: #5c6383;
$custom-dark: #000000;

JSON

{
  "hex": "#172a52",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 82
  },
  "hsl": {
    "h": 220.678,
    "s": 56.19,
    "l": 20.588
  },
  "oklch": {
    "l": 0.29282,
    "c": 0.07704,
    "h": 263.3
  },
  "luminance": 0.02447
}

Semantic roles & 50–950 ramp

primary

#172A52

secondary

#89703C

accent

#AF48DF

background

#F5F5F8

surface

#E9EAEF

border

#C5C6CA

text

#04050A

muted

#79797C

Preview Lab

Preview with #172A52

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

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