#173A65#173A65

#173A65 is a dark, moderate cyan. Relative luminance 0.041; OKLCH L 34.7% C 0.086 H 255.1°. Best body text is #FFFFFF at 11.48:1 contrast (WCAG AA passes).

Color values

HEX	#173A65
RGB	rgb(23, 58, 101)
HSL	hsl(213, 63%, 24%)
HSV	hsv(213, 77%, 40%)
CMYK	cmyk(77.2%, 42.6%, 0%, 60.4%)
CIE-LAB	lab(24.15, 3.90, -28.97)
CIE-LCH	lch(24.15, 29.23, 277.67°)
OKLab	oklab(34.7% -0.0219 -0.0827)
OKLCH	oklch(34.7% 0.086 255.1)
XYZ	xyz(4.2145, 4.1474, 12.8878)
Luminance	0.0415 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A65 #654217

analogous

#176165 #173A65 #1B1765

triadic

#173A65 #65173A #3A6517

tetradic

#173A65 #651761 #654217 #17651B

square

#173A65 #651761 #654217 #17651B

split-complementary

#173A65 #651B17 #616517

monochromatic

#060E19 #0C1D33 #173A65 #225797 #2E73C9

Accessibility & contrast

On white

11.48

#173A65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#173A65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A65

11.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A65	#FFFFFF	#000000	##FFFFFF
##173A65	1.00	11.48	1.83	11.48
#FFFFFF	11.48	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#263D67

Deuteranopia (green-blind)

#193664

Tritanopia (blue-blind)

#00444A

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173a65;
/* rgb */ color: rgb(23, 58, 101);
/* oklch */ color: oklch(34.7% 0.086 255.1);

Tailwind

colors: {
  custom: {
    50: '#606f91',
    500: '#173a65',
    950: '#000000',
  },
}

SCSS

$custom: #173a65;
$custom-light: #606f91;
$custom-dark: #000000;

JSON

{
  "hex": "#173a65",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 101
  },
  "hsl": {
    "h": 213.077,
    "s": 62.903,
    "l": 24.314
  },
  "oklch": {
    "l": 0.34702,
    "c": 0.08553,
    "h": 255.1
  },
  "luminance": 0.04148
}

Semantic roles & 50–950 ramp

primary

#173A65

secondary

#9B713C

accent

#9C42E6

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070D

muted

#797A7D

Preview Lab

Preview with #173A65

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

Preview Lab → · Contrast checker → · Palette generator →