#173C61#173C61

#173C61 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 34.9% C 0.077 H 251.0°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#173C61
RGB	rgb(23, 60, 97)
HSL	hsl(210, 62%, 24%)
HSV	hsv(210, 76%, 38%)
CMYK	cmyk(76.3%, 38.1%, 0%, 62%)
CIE-LAB	lab(24.57, 0.88, -25.72)
CIE-LCH	lch(24.57, 25.74, 271.95°)
OKLab	oklab(34.95% -0.0252 -0.0731)
OKLCH	oklch(34.95% 0.077 251)
XYZ	xyz(4.1261, 4.2765, 11.9149)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173C61 #613C17

analogous

#176161 #173C61 #171761

triadic

#173C61 #61173C #3C6117

tetradic

#173C61 #611761 #613C17 #176117

square

#173C61 #611761 #613C17 #176117

split-complementary

#173C61 #611717 #616117

monochromatic

#060F19 #0B1D30 #173C61 #235B92 #2E79C4

Accessibility & contrast

On white

11.32

#173C61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173C61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173C61

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173C61	#FFFFFF	#000000	##FFFFFF
##173C61	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2B3E63

Deuteranopia (green-blind)

#203760

Tritanopia (blue-blind)

#00454A

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173c61;
/* rgb */ color: rgb(23, 60, 97);
/* oklch */ color: oklch(34.9% 0.077 251.0);

Tailwind

colors: {
  custom: {
    50: '#5f718e',
    500: '#173c61',
    950: '#000000',
  },
}

SCSS

$custom: #173c61;
$custom-light: #5f718e;
$custom-dark: #000000;

JSON

{
  "hex": "#173c61",
  "rgb": {
    "r": 23,
    "g": 60,
    "b": 97
  },
  "hsl": {
    "h": 210,
    "s": 61.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.34945,
    "c": 0.07733,
    "h": 251
  },
  "luminance": 0.04277
}

Semantic roles & 50–950 ramp

primary

#173C61

secondary

#986A3C

accent

#9443E5

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #173C61

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

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