#51D1E5#51D1E5

#51D1E5 is a light, moderate teal. Relative luminance 0.530; OKLCH L 79.8% C 0.114 H 209.6°. Best body text is #000000 at 11.60:1 contrast (WCAG AA passes).

Color values

HEX#51D1E5
RGBrgb(81, 209, 229)
HSLhsl(188, 74%, 61%)
HSVhsv(188, 65%, 90%)
CMYKcmyk(64.6%, 8.7%, 0%, 10.2%)
CIE-LABlab(77.88, -28.92, -20.27)
CIE-LCHlch(77.88, 35.31, 215.03°)
OKLaboklab(79.81% -0.0991 -0.0563)
OKLCHoklch(79.81% 0.114 209.6)
XYZxyz(40.3307, 53.0030, 82.2186)
Luminance0.5301 (WCAG relative)
Temperaturecool
Familyteal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51D1E5 #E56551
analogous
#51E5AF #51D1E5 #5187E5
triadic
#51D1E5 #E551D1 #D1E551
tetradic
#51D1E5 #AF51E5 #E56551 #87E551
square
#51D1E5 #AF51E5 #E56551 #87E551
split-complementary
#51D1E5 #E55187 #E5AF51
monochromatic
#1890A3 #20C0D8 #51D1E5 #86DFED #BBEDF5

Accessibility & contrast

On white

1.81
#51D1E5 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.60
#51D1E5 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D1E5
11.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51D1E5#FFFFFF#000000##000000
##51D1E51.001.8111.6011.60
#FFFFFF1.811.0021.0021.00
#00000011.6021.001.001.00
##00000011.6021.001.001.00

Color blindness preview

Protanopia (red-blind)
#BFCAE6
Deuteranopia (green-blind)
#AABAE5
Tritanopia (blue-blind)
#00DAD7
Achromatopsia (no color)
#C0C0C0

Design tokens & code

CSS
--color: #51d1e5;
/* rgb */ color: rgb(81, 209, 229);
/* oklch */ color: oklch(79.8% 0.114 209.6);
Tailwind
colors: {
  custom: {
    50: '#92dfed',
    500: '#51d1e5',
    950: '#000000',
  },
}
SCSS
$custom: #51d1e5;
$custom-light: #92dfed;
$custom-dark: #000000;
JSON
{
  "hex": "#51d1e5",
  "rgb": {
    "r": 81,
    "g": 209,
    "b": 229
  },
  "hsl": {
    "h": 188.108,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.79805,
    "c": 0.11398,
    "h": 209.6
  },
  "luminance": 0.53007
}

Semantic roles & 50–950 ramp

primary
#51D1E5
secondary
#A64435
accent
#2A0FD6
background
#FCFEFE
surface
#F5FCFD
border
#CFD5D5
text
#0E1516
muted
#7F8484

Preview Lab

Preview with #51D1E5

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

Preview Lab → · Contrast checker → · Palette generator →

#51D1E5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva