#172F52#172F52

#172F52 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.6% C 0.070 H 257.9°. Best body text is #FFFFFF at 13.42:1 contrast (WCAG AA passes).

Color values

HEX	#172F52
RGB	rgb(23, 47, 82)
HSL	hsl(216, 56%, 21%)
HSV	hsv(216, 72%, 32%)
CMYK	cmyk(72%, 42.7%, 0%, 67.8%)
CIE-LAB	lab(19.33, 3.84, -24.15)
CIE-LCH	lch(19.33, 24.45, 279.03°)
OKLab	oklab(30.56% -0.0148 -0.0687)
OKLCH	oklch(30.56% 0.07 257.9)
XYZ	xyz(2.8923, 2.8241, 8.3737)
Luminance	0.0282 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F52 #523A17

analogous

#174C52 #172F52 #1C1752

triadic

#172F52 #52172F #2F5217

tetradic

#172F52 #52174C #523A17 #17521C

square

#172F52 #52174C #523A17 #17521C

split-complementary

#172F52 #521C17 #4C5217

monochromatic

#070E18 #0A1422 #172F52 #244A82 #3266B2

Accessibility & contrast

On white

13.42

#172F52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#172F52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F52

13.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F52	#FFFFFF	#000000	##FFFFFF
##172F52	1.00	13.42	1.56	13.42
#FFFFFF	13.42	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.42	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3253

Deuteranopia (green-blind)

#172C51

Tritanopia (blue-blind)

#00373C

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172f52;
/* rgb */ color: rgb(23, 47, 82);
/* oklch */ color: oklch(30.6% 0.070 257.9);

Tailwind

colors: {
  custom: {
    50: '#5b6783',
    500: '#172f52',
    950: '#000000',
  },
}

SCSS

$custom: #172f52;
$custom-light: #5b6783;
$custom-dark: #000000;

JSON

{
  "hex": "#172f52",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 82
  },
  "hsl": {
    "h": 215.593,
    "s": 56.19,
    "l": 20.588
  },
  "oklch": {
    "l": 0.30556,
    "c": 0.07028,
    "h": 257.9
  },
  "luminance": 0.02824
}

Semantic roles & 50–950 ramp

primary

#172F52

secondary

#896A3C

accent

#A248DF

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060A

muted

#797A7C

Preview Lab

Preview with #172F52

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

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