#172B3F#172B3F

#172B3F is a dark, muted cyan. Relative luminance 0.023; OKLCH L 28.2% C 0.045 H 249.7°. Best body text is #FFFFFF at 14.44:1 contrast (WCAG AA passes).

Color values

HEX	#172B3F
RGB	rgb(23, 43, 63)
HSL	hsl(210, 47%, 17%)
HSV	hsv(210, 63%, 25%)
CMYK	cmyk(63.5%, 31.7%, 0%, 75.3%)
CIE-LAB	lab(16.84, -0.93, -15.14)
CIE-LCH	lch(16.84, 15.16, 266.49°)
OKLab	oklab(28.25% -0.0157 -0.0425)
OKLCH	oklch(28.25% 0.045 249.7)
XYZ	xyz(2.1141, 2.2686, 5.0281)
Luminance	0.0227 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B3F #3F2B17

analogous

#173F3F #172B3F #17173F

triadic

#172B3F #3F172B #2B3F17

tetradic

#172B3F #3F173F #3F2B17 #173F17

square

#172B3F #3F173F #3F2B17 #173F17

split-complementary

#172B3F #3F1717 #3F3F17

monochromatic

#080F16 #080F16 #172B3F #274A6C #386899

Accessibility & contrast

On white

14.44

#172B3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#172B3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B3F

14.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B3F	#FFFFFF	#000000	##FFFFFF
##172B3F	1.00	14.44	1.45	14.44
#FFFFFF	14.44	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#232C40

Deuteranopia (green-blind)

#1D283F

Tritanopia (blue-blind)

#003032

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #172b3f;
/* rgb */ color: rgb(23, 43, 63);
/* oklch */ color: oklch(28.2% 0.045 249.7);

Tailwind

colors: {
  custom: {
    50: '#586474',
    500: '#172b3f',
    950: '#000000',
  },
}

SCSS

$custom: #172b3f;
$custom-light: #586474;
$custom-dark: #000000;

JSON

{
  "hex": "#172b3f",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 63
  },
  "hsl": {
    "h": 210,
    "s": 46.512,
    "l": 16.863
  },
  "oklch": {
    "l": 0.28246,
    "c": 0.04532,
    "h": 249.7
  },
  "luminance": 0.02269
}

Semantic roles & 50–950 ramp

primary

#172B3F

secondary

#76593C

accent

#9452D6

background

#F5F5F7

surface

#E9EAED

border

#C5C6C8

text

#030508

muted

#78797B

Preview Lab

Preview with #172B3F

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

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