#175B7F#175B7F

#175B7F is a dark, moderate cyan. Relative luminance 0.092; OKLCH L 44.8% C 0.088 H 237.3°. Best body text is #FFFFFF at 7.40:1 contrast (WCAG AA passes).

Color values

HEX#175B7F
RGBrgb(23, 91, 127)
HSLhsl(201, 69%, 29%)
HSVhsv(201, 82%, 50%)
CMYKcmyk(81.9%, 28.3%, 0%, 50.2%)
CIE-LABlab(36.36, -7.26, -26.07)
CIE-LCHlch(36.36, 27.06, 254.44°)
OKLaboklab(44.79% -0.0474 -0.0737)
OKLCHoklch(44.79% 0.088 237.3)
XYZxyz(7.9237, 9.1957, 21.4319)
Luminance0.0920 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#175B7F #7F3B17
analogous
#177F6F #175B7F #17277F
triadic
#175B7F #7F175B #5B7F17
tetradic
#175B7F #6F177F #7F3B17 #277F17
square
#175B7F #6F177F #7F3B17 #277F17
split-complementary
#175B7F #7F1727 #7F6F17
monochromatic
#05131A #0E364B #175B7F #2080B3 #36A2DB

Accessibility & contrast

On white

7.40
#175B7F on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.84
#175B7F on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #175B7F
7.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##175B7F#FFFFFF#000000##FFFFFF
##175B7F1.007.402.847.40
#FFFFFF7.401.0021.001.00
#0000002.8421.001.0021.00
##FFFFFF7.401.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4A5B81
Deuteranopia (green-blind)
#3C517E
Tritanopia (blue-blind)
#006467
Achromatopsia (no color)
#565656

Design tokens & code

CSS
--color: #175b7f;
/* rgb */ color: rgb(23, 91, 127);
/* oklch */ color: oklch(44.8% 0.088 237.3);
Tailwind
colors: {
  custom: {
    50: '#6689a4',
    500: '#175b7f',
    950: '#000000',
  },
}
SCSS
$custom: #175b7f;
$custom-light: #6689a4;
$custom-dark: #000000;
JSON
{
  "hex": "#175b7f",
  "rgb": {
    "r": 23,
    "g": 91,
    "b": 127
  },
  "hsl": {
    "h": 200.769,
    "s": 69.333,
    "l": 29.412
  },
  "oklch": {
    "l": 0.4479,
    "c": 0.08759,
    "h": 237.3
  },
  "luminance": 0.09197
}

Semantic roles & 50–950 ramp

primary
#175B7F
secondary
#B4673E
accent
#793CEC
background
#F6F8FA
surface
#EBF0F4
border
#C6CBCE
text
#070B0F
muted
#7A7C7F

Preview Lab

Preview with #175B7F

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

Preview Lab → · Contrast checker → · Palette generator →

#175B7F Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva