#51B1BB#51B1BB

#51B1BB is a light, moderate teal. Relative luminance 0.368; OKLCH L 70.7% C 0.091 H 204.6°. Best body text is #000000 at 8.36:1 contrast (WCAG AA passes).

Color values

HEX#51B1BB
RGBrgb(81, 177, 187)
HSLhsl(186, 44%, 53%)
HSVhsv(186, 57%, 73%)
CMYKcmyk(56.7%, 5.3%, 0%, 26.7%)
CIE-LABlab(67.11, -25.22, -13.66)
CIE-LCHlch(67.11, 28.68, 208.44°)
OKLaboklab(70.68% -0.0827 -0.0378)
OKLCHoklch(70.68% 0.091 204.6)
XYZxyz(28.0814, 36.7787, 52.6232)
Luminance0.3678 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51B1BB #BB5B51
analogous
#51BB90 #51B1BB #517CBB
triadic
#51B1BB #BB51B1 #B1BB51
tetradic
#51B1BB #9051BB #BB5B51 #7CBB51
square
#51B1BB #9051BB #BB5B51 #7CBB51
split-complementary
#51B1BB #BB517C #BB9051
monochromatic
#296369 #3A8C95 #51B1BB #7DC5CC #A9D8DD

Accessibility & contrast

On white

2.51
#51B1BB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

8.36
#51B1BB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B1BB
8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51B1BB#FFFFFF#000000##000000
##51B1BB1.002.518.368.36
#FFFFFF2.511.0021.0021.00
#0000008.3621.001.001.00
##0000008.3621.001.001.00

Color blindness preview

Protanopia (red-blind)
#A4AABC
Deuteranopia (green-blind)
#949EBB
Tritanopia (blue-blind)
#00B7B4
Achromatopsia (no color)
#A3A3A3

Design tokens & code

CSS
--color: #51b1bb;
/* rgb */ color: rgb(81, 177, 187);
/* oklch */ color: oklch(70.7% 0.091 204.6);
Tailwind
colors: {
  custom: {
    50: '#8cc8cf',
    500: '#51b1bb',
    950: '#000000',
  },
}
SCSS
$custom: #51b1bb;
$custom-light: #8cc8cf;
$custom-dark: #000000;
JSON
{
  "hex": "#51b1bb",
  "rgb": {
    "r": 81,
    "g": 177,
    "b": 187
  },
  "hsl": {
    "h": 185.66,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.70682,
    "c": 0.09088,
    "h": 204.6
  },
  "luminance": 0.36781
}

Semantic roles & 50–950 ramp

primary
#51B1BB
secondary
#CBA19D
accent
#6054D4
background
#F9FCFC
surface
#F1F8F9
border
#CBD1D2
text
#0D1313
muted
#7E8282

Preview Lab

Preview with #51B1BB

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

Preview Lab → · Contrast checker → · Palette generator →

#51B1BB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva