#17578D#17578D

#17578D is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.6% C 0.108 H 248.9°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#17578D
RGB	rgb(23, 87, 141)
HSL	hsl(207, 72%, 32%)
HSV	hsv(207, 84%, 55%)
CMYK	cmyk(83.7%, 38.3%, 0%, 44.7%)
CIE-LAB	lab(35.83, 0.78, -35.45)
CIE-LCH	lch(35.83, 35.46, 271.25°)
OKLab	oklab(44.62% -0.0391 -0.1011)
OKLCH	oklch(44.62% 0.108 248.9)
XYZ	xyz(8.5674, 8.9206, 26.4644)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17578D #8D4D17

analogous

#178D88 #17578D #171C8D

triadic

#17578D #8D1757 #578D17

tetradic

#17578D #88178D #8D4D17 #1C8D17

square

#17578D #88178D #8D4D17 #1C8D17

split-complementary

#17578D #8D171C #8D8817

monochromatic

#061624 #0E3758 #17578D #2077C2 #3F96E0

Accessibility & contrast

On white

7.54

#17578D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#17578D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17578D

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17578D	#FFFFFF	#000000	##FFFFFF
##17578D	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D5A8F

Deuteranopia (green-blind)

#2B4F8C

Tritanopia (blue-blind)

#00646B

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #17578d;
/* rgb */ color: rgb(23, 87, 141);
/* oklch */ color: oklch(44.6% 0.108 248.9);

Tailwind

colors: {
  custom: {
    50: '#6986ae',
    500: '#17578d',
    950: '#000000',
  },
}

SCSS

$custom: #17578d;
$custom-light: #6986ae;
$custom-dark: #000000;

JSON

{
  "hex": "#17578d",
  "rgb": {
    "r": 23,
    "g": 87,
    "b": 141
  },
  "hsl": {
    "h": 207.458,
    "s": 71.951,
    "l": 32.157
  },
  "oklch": {
    "l": 0.44618,
    "c": 0.10842,
    "h": 248.9
  },
  "luminance": 0.08922
}

Semantic roles & 50–950 ramp

primary

#17578D

secondary

#C07A40

accent

#8C39EF

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #17578D

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

Preview Lab → · Contrast checker → · Palette generator →