#173E5C#173E5C

#173E5C is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.2% C 0.068 H 244.9°. Best body text is #FFFFFF at 11.17:1 contrast (WCAG AA passes).

Color values

HEX	#173E5C
RGB	rgb(23, 62, 92)
HSL	hsl(206, 60%, 23%)
HSV	hsv(206, 75%, 36%)
CMYK	cmyk(75%, 32.6%, 0%, 63.9%)
CIE-LAB	lab(24.95, -2.49, -21.86)
CIE-LCH	lch(24.95, 22.01, 263.49°)
OKLab	oklab(35.15% -0.029 -0.0618)
OKLCH	oklch(35.15% 0.068 244.9)
XYZ	xyz(4.0070, 4.3997, 10.7612)
Luminance	0.0440 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E5C #5C3517

analogous

#175C57 #173E5C #171B5C

triadic

#173E5C #5C173E #3E5C17

tetradic

#173E5C #57175C #5C3517 #1B5C17

square

#173E5C #57175C #5C3517 #1B5C17

split-complementary

#173E5C #5C171B #5C5717

monochromatic

#061018 #0B1D2B #173E5C #235F8D #2F80BE

Accessibility & contrast

On white

11.17

#173E5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#173E5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E5C

11.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E5C	#FFFFFF	#000000	##FFFFFF
##173E5C	1.00	11.17	1.88	11.17
#FFFFFF	11.17	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303F5D

Deuteranopia (green-blind)

#27385B

Tritanopia (blue-blind)

#004549

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173e5c;
/* rgb */ color: rgb(23, 62, 92);
/* oklch */ color: oklch(35.2% 0.068 244.9);

Tailwind

colors: {
  custom: {
    50: '#5e738a',
    500: '#173e5c',
    950: '#000000',
  },
}

SCSS

$custom: #173e5c;
$custom-light: #5e738a;
$custom-dark: #000000;

JSON

{
  "hex": "#173e5c",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 92
  },
  "hsl": {
    "h": 206.087,
    "s": 60,
    "l": 22.549
  },
  "oklch": {
    "l": 0.35155,
    "c": 0.0683,
    "h": 244.9
  },
  "luminance": 0.044
}

Semantic roles & 50–950 ramp

primary

#173E5C

secondary

#93623C

accent

#8A45E3

background

#F5F6F8

surface

#E9ECF0

border

#C5C7CB

text

#05080B

muted

#797B7C

Preview Lab

Preview with #173E5C

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

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