#173D58#173D58

#173D58 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.6% C 0.064 H 242.7°. Best body text is #FFFFFF at 11.38:1 contrast (WCAG AA passes).

Color values

HEX	#173D58
RGB	rgb(23, 61, 88)
HSL	hsl(205, 59%, 22%)
HSV	hsv(205, 74%, 35%)
CMYK	cmyk(73.9%, 30.7%, 0%, 65.5%)
CIE-LAB	lab(24.40, -3.42, -20.12)
CIE-LCH	lch(24.40, 20.41, 260.36°)
OKLab	oklab(34.65% -0.0293 -0.0568)
OKLCH	oklch(34.65% 0.064 242.7)
XYZ	xyz(3.7829, 4.2238, 9.8465)
Luminance	0.0422 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D58 #583217

analogous

#175853 #173D58 #171D58

triadic

#173D58 #58173D #3D5817

tetradic

#173D58 #531758 #583217 #1D5817

square

#173D58 #531758 #583217 #1D5817

split-complementary

#173D58 #58171D #585317

monochromatic

#061118 #0A1B27 #173D58 #245F89 #3080B9

Accessibility & contrast

On white

11.38

#173D58 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.84

#173D58 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D58

11.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D58	#FFFFFF	#000000	##FFFFFF
##173D58	1.00	11.38	1.84	11.38
#FFFFFF	11.38	1.00	21.00	1.00
#000000	1.84	21.00	1.00	21.00
##FFFFFF	11.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#313D59

Deuteranopia (green-blind)

#283758

Tritanopia (blue-blind)

#004446

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173d58;
/* rgb */ color: rgb(23, 61, 88);
/* oklch */ color: oklch(34.6% 0.064 242.7);

Tailwind

colors: {
  custom: {
    50: '#5d7287',
    500: '#173d58',
    950: '#000000',
  },
}

SCSS

$custom: #173d58;
$custom-light: #5d7287;
$custom-dark: #000000;

JSON

{
  "hex": "#173d58",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 88
  },
  "hsl": {
    "h": 204.923,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.34648,
    "c": 0.06388,
    "h": 242.7
  },
  "luminance": 0.04224
}

Semantic roles & 50–950 ramp

primary

#173D58

secondary

#8F5E3C

accent

#8746E2

background

#F5F6F8

surface

#E9ECEF

border

#C5C7CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #173D58

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

Preview Lab → · Contrast checker → · Palette generator →