#173F56#173F56

#173F56 is a dark, muted cyan. Relative luminance 0.044; OKLCH L 35.1% C 0.060 H 237.2°. Best body text is #FFFFFF at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#173F56
RGB	rgb(23, 63, 86)
HSL	hsl(202, 58%, 21%)
HSV	hsv(202, 73%, 34%)
CMYK	cmyk(73.3%, 26.7%, 0%, 66.3%)
CIE-LAB	lab(24.98, -5.51, -17.90)
CIE-LCH	lch(24.98, 18.73, 252.88°)
OKLab	oklab(35.08% -0.0324 -0.0503)
OKLCH	oklch(35.08% 0.06 237.2)
XYZ	xyz(3.8099, 4.4086, 9.4525)
Luminance	0.0441 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F56 #562E17

analogous

#17564E #173F56 #172056

triadic

#173F56 #56173F #3F5617

tetradic

#173F56 #4E1756 #562E17 #205617

square

#173F56 #4E1756 #562E17 #205617

split-complementary

#173F56 #561720 #564E17

monochromatic

#061218 #0A1C26 #173F56 #246286 #3186B7

Accessibility & contrast

On white

11.16

#173F56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.88

#173F56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F56

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F56	#FFFFFF	#000000	##FFFFFF
##173F56	1.00	11.16	1.88	11.16
#FFFFFF	11.16	1.00	21.00	1.00
#000000	1.88	21.00	1.00	21.00
##FFFFFF	11.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#343F57

Deuteranopia (green-blind)

#2C3956

Tritanopia (blue-blind)

#004547

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173f56;
/* rgb */ color: rgb(23, 63, 86);
/* oklch */ color: oklch(35.1% 0.060 237.2);

Tailwind

colors: {
  custom: {
    50: '#5d7485',
    500: '#173f56',
    950: '#000000',
  },
}

SCSS

$custom: #173f56;
$custom-light: #5d7485;
$custom-dark: #000000;

JSON

{
  "hex": "#173f56",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 86
  },
  "hsl": {
    "h": 201.905,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.35075,
    "c": 0.05987,
    "h": 237.2
  },
  "luminance": 0.04409
}

Semantic roles & 50–950 ramp

primary

#173F56

secondary

#8D593C

accent

#7F47E1

background

#F5F7F8

surface

#E9EDEF

border

#C5C8CA

text

#04080B

muted

#797B7C

Preview Lab

Preview with #173F56

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

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