#172A3C#172A3C

#172A3C is a dark, muted cyan. Relative luminance 0.022; OKLCH L 27.8% C 0.042 H 248.3°. Best body text is #FFFFFF at 14.66:1 contrast (WCAG AA passes).

Color values

HEX	#172A3C
RGB	rgb(23, 42, 60)
HSL	hsl(209, 45%, 16%)
HSV	hsv(209, 62%, 24%)
CMYK	cmyk(61.7%, 30%, 0%, 76.5%)
CIE-LAB	lab(16.33, -1.38, -13.85)
CIE-LCH	lch(16.33, 13.92, 264.32°)
OKLab	oklab(27.79% -0.0155 -0.0388)
OKLCH	oklch(27.79% 0.042 248.3)
XYZ	xyz(1.9966, 2.1642, 4.5866)
Luminance	0.0216 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A3C #3C2917

analogous

#173C3C #172A3C #17183C

triadic

#172A3C #3C172A #2A3C17

tetradic

#172A3C #3C173C #3C2917 #183C17

square

#172A3C #3C173C #3C2917 #183C17

split-complementary

#172A3C #3C1718 #3C3C17

monochromatic

#080F16 #080F16 #172A3C #284968 #396894

Accessibility & contrast

On white

14.66

#172A3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#172A3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A3C

14.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A3C	#FFFFFF	#000000	##FFFFFF
##172A3C	1.00	14.66	1.43	14.66
#FFFFFF	14.66	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#232B3D

Deuteranopia (green-blind)

#1E273C

Tritanopia (blue-blind)

#032E30

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #172a3c;
/* rgb */ color: rgb(23, 42, 60);
/* oklch */ color: oklch(27.8% 0.042 248.3);

Tailwind

colors: {
  custom: {
    50: '#576371',
    500: '#172a3c',
    950: '#000000',
  },
}

SCSS

$custom: #172a3c;
$custom-light: #576371;
$custom-dark: #000000;

JSON

{
  "hex": "#172a3c",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 60
  },
  "hsl": {
    "h": 209.189,
    "s": 44.578,
    "l": 16.275
  },
  "oklch": {
    "l": 0.2779,
    "c": 0.04178,
    "h": 248.3
  },
  "luminance": 0.02164
}

Semantic roles & 50–950 ramp

primary

#172A3C

secondary

#73573C

accent

#9254D4

background

#F5F5F6

surface

#E9EAEC

border

#C5C6C7

text

#030507

muted

#78797A

Preview Lab

Preview with #172A3C

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

Preview Lab → · Contrast checker → · Palette generator →