#17578C#17578C

#17578C is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.6% C 0.107 H 248.4°. Best body text is #FFFFFF at 7.56:1 contrast (WCAG AA passes).

Color values

HEX	#17578C
RGB	rgb(23, 87, 140)
HSL	hsl(207, 72%, 32%)
HSV	hsv(207, 84%, 55%)
CMYK	cmyk(83.6%, 37.9%, 0%, 45.1%)
CIE-LAB	lab(35.77, 0.38, -34.93)
CIE-LCH	lch(35.77, 34.94, 270.62°)
OKLab	oklab(44.55% -0.0394 -0.0996)
OKLCH	oklch(44.55% 0.107 248.4)
XYZ	xyz(8.4934, 8.8909, 26.0743)
Luminance	0.0889 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17578C #8C4C17

analogous

#178C86 #17578C #171D8C

triadic

#17578C #8C1757 #578C17

tetradic

#17578C #86178C #8C4C17 #1D8C17

square

#17578C #86178C #8C4C17 #1D8C17

split-complementary

#17578C #8C171D #8C8617

monochromatic

#061623 #0E3657 #17578C #2078C1 #3E96DF

Accessibility & contrast

On white

7.56

#17578C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#17578C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17578C

7.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17578C	#FFFFFF	#000000	##FFFFFF
##17578C	1.00	7.56	2.78	7.56
#FFFFFF	7.56	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E5A8E

Deuteranopia (green-blind)

#2C4F8B

Tritanopia (blue-blind)

#00646B

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #17578c;
/* rgb */ color: rgb(23, 87, 140);
/* oklch */ color: oklch(44.6% 0.107 248.4);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#17578c",
  "rgb": {
    "r": 23,
    "g": 87,
    "b": 140
  },
  "hsl": {
    "h": 207.179,
    "s": 71.779,
    "l": 31.961
  },
  "oklch": {
    "l": 0.44554,
    "c": 0.10711,
    "h": 248.4
  },
  "luminance": 0.08892
}

Semantic roles & 50–950 ramp

primary

#17578C

secondary

#BF793F

accent

#8B39EF

background

#F6F8FA

surface

#ECEFF4

border

#C7CACE

text

#070B10

muted

#7A7C7F

Preview Lab

Preview with #17578C

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

Preview Lab → · Contrast checker → · Palette generator →