#17557B#17557B

#17557B is a dark, moderate cyan. Relative luminance 0.081; OKLCH L 43.0% C 0.088 H 240.8°. Best body text is #FFFFFF at 8.01:1 contrast (WCAG AA passes).

Color values

HEX#17557B
RGBrgb(23, 85, 123)
HSLhsl(203, 68%, 29%)
HSVhsv(203, 81%, 48%)
CMYKcmyk(81.3%, 30.9%, 0%, 51.8%)
CIE-LABlab(34.21, -5.09, -26.98)
CIE-LCHlch(34.21, 27.45, 259.31°)
OKLaboklab(43.02% -0.0428 -0.0764)
OKLCHoklch(43.02% 0.088 240.8)
XYZxyz(7.1756, 8.1084, 19.9219)
Luminance0.0811 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#17557B #7B3D17
analogous
#177B6F #17557B #17237B
triadic
#17557B #7B1755 #557B17
tetradic
#17557B #6F177B #7B3D17 #237B17
square
#17557B #6F177B #7B3D17 #237B17
split-complementary
#17557B #7B1723 #7B6F17
monochromatic
#05121A #0D3147 #17557B #2179AF #339AD9

Accessibility & contrast

On white

8.01
#17557B on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.62
#17557B on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17557B
8.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##17557B#FFFFFF#000000##FFFFFF
##17557B1.008.012.628.01
#FFFFFF8.011.0021.001.00
#0000002.6221.001.0021.00
##FFFFFF8.011.0021.001.00

Color blindness preview

Protanopia (red-blind)
#43567D
Deuteranopia (green-blind)
#354C7A
Tritanopia (blue-blind)
#005E62
Achromatopsia (no color)
#505050

Design tokens & code

CSS
--color: #17557b;
/* rgb */ color: rgb(23, 85, 123);
/* oklch */ color: oklch(43.0% 0.088 240.8);
Tailwind
colors: {
  custom: {
    50: '#6584a1',
    500: '#17557b',
    950: '#000000',
  },
}
SCSS
$custom: #17557b;
$custom-light: #6584a1;
$custom-dark: #000000;
JSON
{
  "hex": "#17557b",
  "rgb": {
    "r": 23,
    "g": 85,
    "b": 123
  },
  "hsl": {
    "h": 202.8,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.43016,
    "c": 0.08755,
    "h": 240.8
  },
  "luminance": 0.08109
}

Semantic roles & 50–950 ramp

primary
#17557B
secondary
#B0693E
accent
#7F3CEB
background
#F6F8F9
surface
#EBEFF2
border
#C6CACC
text
#060B0F
muted
#7A7C7E

Preview Lab

Preview with #17557B

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

Preview Lab → · Contrast checker → · Palette generator →

#17557B Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva