#173D4B#173D4B

#173D4B is a dark, muted cyan. Relative luminance 0.040; OKLCH L 33.9% C 0.049 H 225.3°. Best body text is #FFFFFF at 11.63:1 contrast (WCAG AA passes).

Color values

HEX	#173D4B
RGB	rgb(23, 61, 75)
HSL	hsl(196, 53%, 19%)
HSV	hsv(196, 69%, 29%)
CMYK	cmyk(69.3%, 18.7%, 0%, 70.6%)
CIE-LAB	lab(23.76, -8.41, -12.54)
CIE-LCH	lch(23.76, 15.10, 236.16°)
OKLab	oklab(33.93% -0.0346 -0.035)
OKLCH	oklch(33.93% 0.049 225.3)
XYZ	xyz(3.2916, 4.0273, 7.2591)
Luminance	0.0403 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D4B #4B2517

analogous

#174B3F #173D4B #17234B

triadic

#173D4B #4B173D #3D4B17

tetradic

#173D4B #3F174B #4B2517 #234B17

square

#173D4B #3F174B #4B2517 #234B17

split-complementary

#173D4B #4B1723 #4B3F17

monochromatic

#071317 #09171C #173D4B #25637A #3489A9

Accessibility & contrast

On white

11.63

#173D4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.81

#173D4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D4B

11.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D4B	#FFFFFF	#000000	##FFFFFF
##173D4B	1.00	11.63	1.81	11.63
#FFFFFF	11.63	1.00	21.00	1.00
#000000	1.81	21.00	1.00	21.00
##FFFFFF	11.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353C4C

Deuteranopia (green-blind)

#2E364B

Tritanopia (blue-blind)

#004142

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173d4b;
/* rgb */ color: rgb(23, 61, 75);
/* oklch */ color: oklch(33.9% 0.049 225.3);

Tailwind

colors: {
  custom: {
    50: '#5b727d',
    500: '#173d4b',
    950: '#000000',
  },
}

SCSS

$custom: #173d4b;
$custom-light: #5b727d;
$custom-dark: #000000;

JSON

{
  "hex": "#173d4b",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 75
  },
  "hsl": {
    "h": 196.154,
    "s": 53.061,
    "l": 19.216
  },
  "oklch": {
    "l": 0.33932,
    "c": 0.04918,
    "h": 225.3
  },
  "luminance": 0.04028
}

Semantic roles & 50–950 ramp

primary

#173D4B

secondary

#824F3C

accent

#724BDC

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040809

muted

#797B7B

Preview Lab

Preview with #173D4B

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

Preview Lab → · Contrast checker → · Palette generator →