#173F61#173F61

#173F61 is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.7% C 0.074 H 247.4°. Best body text is #FFFFFF at 10.94:1 contrast (WCAG AA passes).

Color values

HEX	#173F61
RGB	rgb(23, 63, 97)
HSL	hsl(208, 62%, 24%)
HSV	hsv(208, 76%, 38%)
CMYK	cmyk(76.3%, 35.1%, 0%, 62%)
CIE-LAB	lab(25.56, -1.16, -24.15)
CIE-LCH	lch(25.56, 24.17, 267.25°)
OKLab	oklab(35.73% -0.0284 -0.0685)
OKLCH	oklch(35.73% 0.074 247.4)
XYZ	xyz(4.2877, 4.5998, 11.9688)
Luminance	0.0460 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F61 #613917

analogous

#17615E #173F61 #171A61

triadic

#173F61 #61173F #3F6117

tetradic

#173F61 #5E1761 #613917 #1A6117

square

#173F61 #5E1761 #613917 #1A6117

split-complementary

#173F61 #61171A #615E17

monochromatic

#061019 #0B1F30 #173F61 #235F92 #2E7FC4

Accessibility & contrast

On white

10.94

#173F61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#173F61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F61

10.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F61	#FFFFFF	#000000	##FFFFFF
##173F61	1.00	10.94	1.92	10.94
#FFFFFF	10.94	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#304062

Deuteranopia (green-blind)

#253960

Tritanopia (blue-blind)

#00474B

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173f61;
/* rgb */ color: rgb(23, 63, 97);
/* oklch */ color: oklch(35.7% 0.074 247.4);

Tailwind

colors: {
  custom: {
    50: '#5f738e',
    500: '#173f61',
    950: '#000000',
  },
}

SCSS

$custom: #173f61;
$custom-light: #5f738e;
$custom-dark: #000000;

JSON

{
  "hex": "#173f61",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 97
  },
  "hsl": {
    "h": 207.568,
    "s": 61.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.35728,
    "c": 0.07414,
    "h": 247.4
  },
  "luminance": 0.046
}

Semantic roles & 50–950 ramp

primary

#173F61

secondary

#98663C

accent

#8D43E5

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #173F61

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

Preview Lab → · Contrast checker → · Palette generator →