#172B3C#172B3C

#172B3C is a dark, muted cyan. Relative luminance 0.022; OKLCH L 28.1% C 0.041 H 245.6°. Best body text is #FFFFFF at 14.51:1 contrast (WCAG AA passes).

Color values

HEX	#172B3C
RGB	rgb(23, 43, 60)
HSL	hsl(208, 45%, 16%)
HSV	hsv(208, 62%, 24%)
CMYK	cmyk(61.7%, 28.3%, 0%, 76.5%)
CIE-LAB	lab(16.68, -2.08, -13.30)
CIE-LCH	lch(16.68, 13.47, 261.12°)
OKLab	oklab(28.07% -0.0169 -0.0372)
OKLCH	oklch(28.07% 0.041 245.6)
XYZ	xyz(2.0325, 2.2360, 4.5986)
Luminance	0.0224 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B3C #3C2817

analogous

#173C3B #172B3C #17193C

triadic

#172B3C #3C172B #2B3C17

tetradic

#172B3C #3B173C #3C2817 #193C17

square

#172B3C #3B173C #3C2817 #193C17

split-complementary

#172B3C #3C1719 #3C3B17

monochromatic

#081016 #081016 #172B3C #284B68 #396A94

Accessibility & contrast

On white

14.51

#172B3C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#172B3C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B3C

14.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B3C	#FFFFFF	#000000	##FFFFFF
##172B3C	1.00	14.51	1.45	14.51
#FFFFFF	14.51	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#242B3D

Deuteranopia (green-blind)

#1F283C

Tritanopia (blue-blind)

#032F31

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #172b3c;
/* rgb */ color: rgb(23, 43, 60);
/* oklch */ color: oklch(28.1% 0.041 245.6);

Tailwind

colors: {
  custom: {
    50: '#576471',
    500: '#172b3c',
    950: '#000000',
  },
}

SCSS

$custom: #172b3c;
$custom-light: #576471;
$custom-dark: #000000;

JSON

{
  "hex": "#172b3c",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 60
  },
  "hsl": {
    "h": 207.568,
    "s": 44.578,
    "l": 16.275
  },
  "oklch": {
    "l": 0.28069,
    "c": 0.04088,
    "h": 245.6
  },
  "luminance": 0.02236
}

Semantic roles & 50–950 ramp

primary

#172B3C

secondary

#73553C

accent

#8F54D4

background

#F5F5F6

surface

#E9EAEC

border

#C5C6C7

text

#030507

muted

#78797A

Preview Lab

Preview with #172B3C

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

Preview Lab → · Contrast checker → · Palette generator →