#173D4C#173D4C

#173D4C is a dark, muted cyan. Relative luminance 0.040; OKLCH L 34.0% C 0.050 H 227.1°. Best body text is #FFFFFF at 11.61:1 contrast (WCAG AA passes).

Color values

HEX	#173D4C
RGB	rgb(23, 61, 76)
HSL	hsl(197, 54%, 19%)
HSV	hsv(197, 70%, 30%)
CMYK	cmyk(69.7%, 19.7%, 0%, 70.2%)
CIE-LAB	lab(23.81, -8.04, -13.14)
CIE-LCH	lch(23.81, 15.40, 238.54°)
OKLab	oklab(33.98% -0.0341 -0.0367)
OKLCH	oklch(33.98% 0.05 227.1)
XYZ	xyz(3.3261, 4.0411, 7.4408)
Luminance	0.0404 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D4C #4C2617

analogous

#174C41 #173D4C #17234C

triadic

#173D4C #4C173D #3D4C17

tetradic

#173D4C #41174C #4C2617 #234C17

square

#173D4C #41174C #4C2617 #234C17

split-complementary

#173D4C #4C1723 #4C4117

monochromatic

#071317 #09171D #173D4C #25637B #3388AA

Accessibility & contrast

On white

11.61

#173D4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#173D4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D4C

11.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D4C	#FFFFFF	#000000	##FFFFFF
##173D4C	1.00	11.61	1.81	11.61
#FFFFFF	11.61	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353C4D

Deuteranopia (green-blind)

#2E364C

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173d4c;
/* rgb */ color: rgb(23, 61, 76);
/* oklch */ color: oklch(34.0% 0.050 227.1);

Tailwind

colors: {
  custom: {
    50: '#5b727e',
    500: '#173d4c',
    950: '#000000',
  },
}

SCSS

$custom: #173d4c;
$custom-light: #5b727e;
$custom-dark: #000000;

JSON

{
  "hex": "#173d4c",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 76
  },
  "hsl": {
    "h": 196.981,
    "s": 53.535,
    "l": 19.412
  },
  "oklch": {
    "l": 0.33984,
    "c": 0.05009,
    "h": 227.1
  },
  "luminance": 0.04041
}

Semantic roles & 50–950 ramp

primary

#173D4C

secondary

#83503C

accent

#744BDD

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #173D4C

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

Preview Lab → · Contrast checker → · Palette generator →