#155F80#155F80

#155F80 is a mid, moderate cyan. Relative luminance 0.099; OKLCH L 45.8% C 0.087 H 233.3°. Best body text is #FFFFFF at 7.05:1 contrast (WCAG AA passes).

Color values

HEX#155F80
RGBrgb(21, 95, 128)
HSLhsl(199, 72%, 29%)
HSVhsv(199, 84%, 50%)
CMYKcmyk(83.6%, 25.8%, 0%, 49.8%)
CIE-LABlab(37.66, -9.52, -24.64)
CIE-LCHlch(37.66, 26.42, 248.88°)
OKLaboklab(45.83% -0.0518 -0.0695)
OKLCHoklch(45.83% 0.087 233.3)
XYZxyz(8.2962, 9.9013, 21.8918)
Luminance0.0990 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#155F80 #803615
analogous
#15806C #155F80 #152980
triadic
#155F80 #80155F #5F8015
tetradic
#155F80 #6C1580 #803615 #298015
square
#155F80 #6C1580 #803615 #298015
split-complementary
#155F80 #801529 #806C15
monochromatic
#04141A #0C384B #155F80 #1E86B5 #32A9DD

Accessibility & contrast

On white

7.05
#155F80 on #FFFFFF
AA ✓AA large ✓AAA ✓

On black

2.98
#155F80 on #000000
AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #155F80
7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##155F80#FFFFFF#000000##FFFFFF
##155F801.007.052.987.05
#FFFFFF7.051.0021.001.00
#0000002.9821.001.0021.00
##FFFFFF7.051.0021.001.00

Color blindness preview

Protanopia (red-blind)
#4F5E82
Deuteranopia (green-blind)
#40547F
Tritanopia (blue-blind)
#00686A
Achromatopsia (no color)
#595959

Design tokens & code

CSS
--color: #155f80;
/* rgb */ color: rgb(21, 95, 128);
/* oklch */ color: oklch(45.8% 0.087 233.3);
Tailwind
colors: {
  custom: {
    50: '#668ca5',
    500: '#155f80',
    950: '#000000',
  },
}
SCSS
$custom: #155f80;
$custom-light: #668ca5;
$custom-dark: #000000;
JSON
{
  "hex": "#155f80",
  "rgb": {
    "r": 21,
    "g": 95,
    "b": 128
  },
  "hsl": {
    "h": 198.505,
    "s": 71.812,
    "l": 29.216
  },
  "oklch": {
    "l": 0.45834,
    "c": 0.08672,
    "h": 233.3
  },
  "luminance": 0.09902
}

Semantic roles & 50–950 ramp

primary
#155F80
secondary
#B5613C
accent
#7139EF
background
#F6F8FA
surface
#EBF0F4
border
#C6CBCE
text
#070C0F
muted
#7A7D7F

Preview Lab

Preview with #155F80

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

Preview Lab → · Contrast checker → · Palette generator →

#155F80 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva