#172B39#172B39

#172B39 is a dark, muted cyan. Relative luminance 0.022; OKLCH L 27.9% C 0.037 H 240.4°. Best body text is #FFFFFF at 14.57:1 contrast (WCAG AA passes).

Color values

HEX	#172B39
RGB	rgb(23, 43, 57)
HSL	hsl(205, 43%, 16%)
HSV	hsv(205, 60%, 22%)
CMYK	cmyk(59.6%, 24.6%, 0%, 77.6%)
CIE-LAB	lab(16.53, -3.21, -11.45)
CIE-LCH	lch(16.53, 11.89, 254.36°)
OKLab	oklab(27.9% -0.0181 -0.0319)
OKLCH	oklch(27.9% 0.037 240.4)
XYZ	xyz(1.9555, 2.2052, 4.1927)
Luminance	0.0221 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B39 #392517

analogous

#173936 #172B39 #171A39

triadic

#172B39 #39172B #2B3917

tetradic

#172B39 #361739 #392517 #1A3917

square

#172B39 #361739 #392517 #1A3917

split-complementary

#172B39 #39171A #393617

monochromatic

#091016 #091016 #172B39 #294C65 #3A6D90

Accessibility & contrast

On white

14.57

#172B39 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#172B39 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B39

14.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B39	#FFFFFF	#000000	##FFFFFF
##172B39	1.00	14.57	1.44	14.57
#FFFFFF	14.57	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#252B3A

Deuteranopia (green-blind)

#202739

Tritanopia (blue-blind)

#052E30

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #172b39;
/* rgb */ color: rgb(23, 43, 57);
/* oklch */ color: oklch(27.9% 0.037 240.4);

Tailwind

colors: {
  custom: {
    50: '#57646f',
    500: '#172b39',
    950: '#000000',
  },
}

SCSS

$custom: #172b39;
$custom-light: #57646f;
$custom-dark: #000000;

JSON

{
  "hex": "#172b39",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 57
  },
  "hsl": {
    "h": 204.706,
    "s": 42.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.279,
    "c": 0.03671,
    "h": 240.4
  },
  "luminance": 0.02205
}

Semantic roles & 50–950 ramp

primary

#172B39

secondary

#6F513C

accent

#8956D2

background

#F5F5F6

surface

#E9EAEC

border

#C5C6C7

text

#030507

muted

#78797A

Preview Lab

Preview with #172B39

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

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