#172A3F#172A3F

#172A3F is a dark, muted cyan. Relative luminance 0.022; OKLCH L 28.0% C 0.046 H 252.0°. Best body text is #FFFFFF at 14.59:1 contrast (WCAG AA passes).

Color values

HEX	#172A3F
RGB	rgb(23, 42, 63)
HSL	hsl(212, 47%, 17%)
HSV	hsv(212, 63%, 25%)
CMYK	cmyk(63.5%, 33.3%, 0%, 75.3%)
CIE-LAB	lab(16.49, -0.22, -15.68)
CIE-LCH	lch(16.49, 15.69, 269.20°)
OKLab	oklab(27.97% -0.0143 -0.0441)
OKLCH	oklch(27.97% 0.046 252)
XYZ	xyz(2.0782, 2.1968, 5.0162)
Luminance	0.0220 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A3F #3F2C17

analogous

#173E3F #172A3F #18173F

triadic

#172A3F #3F172A #2A3F17

tetradic

#172A3F #3F173E #3F2C17 #173F18

square

#172A3F #3F173E #3F2C17 #173F18

split-complementary

#172A3F #3F1817 #3E3F17

monochromatic

#080F16 #080F16 #172A3F #27486C #386699

Accessibility & contrast

On white

14.59

#172A3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#172A3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A3F

14.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A3F	#FFFFFF	#000000	##FFFFFF
##172A3F	1.00	14.59	1.44	14.59
#FFFFFF	14.59	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#212B40

Deuteranopia (green-blind)

#1C273F

Tritanopia (blue-blind)

#002F31

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #172a3f;
/* rgb */ color: rgb(23, 42, 63);
/* oklch */ color: oklch(28.0% 0.046 252.0);

Tailwind

colors: {
  custom: {
    50: '#586374',
    500: '#172a3f',
    950: '#000000',
  },
}

SCSS

$custom: #172a3f;
$custom-light: #586374;
$custom-dark: #000000;

JSON

{
  "hex": "#172a3f",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 63
  },
  "hsl": {
    "h": 211.5,
    "s": 46.512,
    "l": 16.863
  },
  "oklch": {
    "l": 0.27971,
    "c": 0.04637,
    "h": 252
  },
  "luminance": 0.02197
}

Semantic roles & 50–950 ramp

primary

#172A3F

secondary

#765A3C

accent

#9752D6

background

#F5F5F7

surface

#E9EAED

border

#C5C6C8

text

#030508

muted

#78797B

Preview Lab

Preview with #172A3F

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

Preview Lab → · Contrast checker → · Palette generator →