#173C5C#173C5C

#173C5C is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.6% C 0.070 H 247.6°. Best body text is #FFFFFF at 11.43:1 contrast (WCAG AA passes).

Color values

HEX	#173C5C
RGB	rgb(23, 60, 92)
HSL	hsl(208, 60%, 23%)
HSV	hsv(208, 75%, 36%)
CMYK	cmyk(75%, 34.8%, 0%, 63.9%)
CIE-LAB	lab(24.28, -1.15, -22.92)
CIE-LCH	lch(24.28, 22.95, 267.12°)
OKLab	oklab(34.63% -0.0267 -0.0649)
OKLCH	oklch(34.63% 0.07 247.6)
XYZ	xyz(3.9002, 4.1862, 10.7256)
Luminance	0.0419 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C5C #5C3717

analogous

#175C59 #173C5C #171A5C

triadic

#173C5C #5C173C #3C5C17

tetradic

#173C5C #59175C #5C3717 #1A5C17

square

#173C5C #59175C #5C3717 #1A5C17

split-complementary

#173C5C #5C171A #5C5917

monochromatic

#061018 #0B1C2B #173C5C #235C8D #2F7CBE

Accessibility & contrast

On white

11.43

#173C5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173C5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C5C

11.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C5C	#FFFFFF	#000000	##FFFFFF
##173C5C	1.00	11.43	1.84	11.43
#FFFFFF	11.43	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E3D5D

Deuteranopia (green-blind)

#24375B

Tritanopia (blue-blind)

#004447

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173c5c;
/* rgb */ color: rgb(23, 60, 92);
/* oklch */ color: oklch(34.6% 0.070 247.6);

Tailwind

colors: {
  custom: {
    50: '#5e718a',
    500: '#173c5c',
    950: '#000000',
  },
}

SCSS

$custom: #173c5c;
$custom-light: #5e718a;
$custom-dark: #000000;

JSON

{
  "hex": "#173c5c",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 92
  },
  "hsl": {
    "h": 207.826,
    "s": 60,
    "l": 22.549
  },
  "oklch": {
    "l": 0.34625,
    "c": 0.07023,
    "h": 247.6
  },
  "luminance": 0.04187
}

Semantic roles & 50–950 ramp

primary

#173C5C

secondary

#93643C

accent

#8E45E3

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #173C5C

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

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