#172C3F#172C3F

#172C3F is a dark, muted cyan. Relative luminance 0.023; OKLCH L 28.5% C 0.044 H 247.3°. Best body text is #FFFFFF at 14.30:1 contrast (WCAG AA passes).

Color values

HEX	#172C3F
RGB	rgb(23, 44, 63)
HSL	hsl(209, 47%, 17%)
HSV	hsv(209, 63%, 25%)
CMYK	cmyk(63.5%, 30.2%, 0%, 75.3%)
CIE-LAB	lab(17.19, -1.63, -14.59)
CIE-LCH	lch(17.19, 14.68, 263.62°)
OKLab	oklab(28.52% -0.0171 -0.0409)
OKLCH	oklch(28.52% 0.044 247.3)
XYZ	xyz(2.1509, 2.3422, 5.0404)
Luminance	0.0234 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C3F #3F2A17

analogous

#173F3E #172C3F #17183F

triadic

#172C3F #3F172C #2C3F17

tetradic

#172C3F #3E173F #3F2A17 #183F17

square

#172C3F #3E173F #3F2A17 #183F17

split-complementary

#172C3F #3F1718 #3F3E17

monochromatic

#081016 #081016 #172C3F #274B6C #386B99

Accessibility & contrast

On white

14.30

#172C3F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#172C3F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C3F

14.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C3F	#FFFFFF	#000000	##FFFFFF
##172C3F	1.00	14.30	1.47	14.30
#FFFFFF	14.30	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#242D40

Deuteranopia (green-blind)

#1F293F

Tritanopia (blue-blind)

#003033

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #172c3f;
/* rgb */ color: rgb(23, 44, 63);
/* oklch */ color: oklch(28.5% 0.044 247.3);

Tailwind

colors: {
  custom: {
    50: '#586474',
    500: '#172c3f',
    950: '#000000',
  },
}

SCSS

$custom: #172c3f;
$custom-light: #586474;
$custom-dark: #000000;

JSON

{
  "hex": "#172c3f",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 63
  },
  "hsl": {
    "h": 208.5,
    "s": 46.512,
    "l": 16.863
  },
  "oklch": {
    "l": 0.28522,
    "c": 0.04435,
    "h": 247.3
  },
  "luminance": 0.02342
}

Semantic roles & 50–950 ramp

primary

#172C3F

secondary

#76573C

accent

#9152D6

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#030508

muted

#787A7B

Preview Lab

Preview with #172C3F

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

Preview Lab → · Contrast checker → · Palette generator →