#173C5F#173C5F

#173C5F is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.8% C 0.074 H 249.8°. Best body text is #FFFFFF at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#173C5F
RGB	rgb(23, 60, 95)
HSL	hsl(209, 61%, 23%)
HSV	hsv(209, 76%, 37%)
CMYK	cmyk(75.8%, 36.8%, 0%, 62.7%)
CIE-LAB	lab(24.45, 0.06, -24.61)
CIE-LCH	lch(24.45, 24.61, 270.14°)
OKLab	oklab(34.82% -0.0258 -0.0699)
OKLCH	oklch(34.82% 0.074 249.8)
XYZ	xyz(4.0340, 4.2397, 11.4300)
Luminance	0.0424 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C5F #5F3A17

analogous

#175F5E #173C5F #17185F

triadic

#173C5F #5F173C #3C5F17

tetradic

#173C5F #5E175F #5F3A17 #185F17

square

#173C5F #5E175F #5F3A17 #185F17

split-complementary

#173C5F #5F1718 #5F5E17

monochromatic

#061019 #0B1D2E #173C5F #235B90 #2F7AC2

Accessibility & contrast

On white

11.36

#173C5F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173C5F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C5F

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C5F	#FFFFFF	#000000	##FFFFFF
##173C5F	1.00	11.36	1.85	11.36
#FFFFFF	11.36	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2C3E60

Deuteranopia (green-blind)

#22375E

Tritanopia (blue-blind)

#004449

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173c5f;
/* rgb */ color: rgb(23, 60, 95);
/* oklch */ color: oklch(34.8% 0.074 249.8);

Tailwind

colors: {
  custom: {
    50: '#5e718c',
    500: '#173c5f',
    950: '#000000',
  },
}

SCSS

$custom: #173c5f;
$custom-light: #5e718c;
$custom-dark: #000000;

JSON

{
  "hex": "#173c5f",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 95
  },
  "hsl": {
    "h": 209.167,
    "s": 61.017,
    "l": 23.137
  },
  "oklch": {
    "l": 0.34815,
    "c": 0.07446,
    "h": 249.8
  },
  "luminance": 0.0424
}

Semantic roles & 50–950 ramp

primary

#173C5F

secondary

#96683C

accent

#9244E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #173C5F

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

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