#173D5C#173D5C

#173D5C is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.069 H 246.3°. Best body text is #FFFFFF at 11.30:1 contrast (WCAG AA passes).

Color values

HEX	#173D5C
RGB	rgb(23, 61, 92)
HSL	hsl(207, 60%, 23%)
HSV	hsv(207, 75%, 36%)
CMYK	cmyk(75%, 33.7%, 0%, 63.9%)
CIE-LAB	lab(24.61, -1.82, -22.39)
CIE-LCH	lch(24.61, 22.47, 265.34°)
OKLab	oklab(34.89% -0.0279 -0.0634)
OKLCH	oklch(34.89% 0.069 246.3)
XYZ	xyz(3.9531, 4.2919, 10.7432)
Luminance	0.0429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D5C #5C3617

analogous

#175C59 #173D5C #171A5C

triadic

#173D5C #5C173D #3D5C17

tetradic

#173D5C #59175C #5C3617 #1A5C17

square

#173D5C #59175C #5C3617 #1A5C17

split-complementary

#173D5C #5C171A #5C5917

monochromatic

#061018 #0B1D2B #173D5C #235D8D #2F7EBE

Accessibility & contrast

On white

11.30

#173D5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173D5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D5C

11.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D5C	#FFFFFF	#000000	##FFFFFF
##173D5C	1.00	11.30	1.86	11.30
#FFFFFF	11.30	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F3E5D

Deuteranopia (green-blind)

#25375B

Tritanopia (blue-blind)

#004448

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173d5c;
/* rgb */ color: rgb(23, 61, 92);
/* oklch */ color: oklch(34.9% 0.069 246.3);

Tailwind

colors: {
  custom: {
    50: '#5e728a',
    500: '#173d5c',
    950: '#000000',
  },
}

SCSS

$custom: #173d5c;
$custom-light: #5e728a;
$custom-dark: #000000;

JSON

{
  "hex": "#173d5c",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 92
  },
  "hsl": {
    "h": 206.957,
    "s": 60,
    "l": 22.549
  },
  "oklch": {
    "l": 0.3489,
    "c": 0.06925,
    "h": 246.3
  },
  "luminance": 0.04292
}

Semantic roles & 50–950 ramp

primary

#173D5C

secondary

#93633C

accent

#8C45E3

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05070B

muted

#797A7C

Preview Lab

Preview with #173D5C

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

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