#51CCE5#51CCE5

#51CCE5 is a light, moderate cyan. Relative luminance 0.506; OKLCH L 78.6% C 0.113 H 213.6°. Best body text is #000000 at 11.12:1 contrast (WCAG AA passes).

Color values

HEX#51CCE5
RGBrgb(81, 204, 229)
HSLhsl(190, 74%, 61%)
HSVhsv(190, 65%, 90%)
CMYKcmyk(64.6%, 10.9%, 0%, 10.2%)
CIE-LABlab(76.43, -26.46, -22.47)
CIE-LCHlch(76.43, 34.71, 220.33°)
OKLaboklab(78.64% -0.0941 -0.0624)
OKLCHoklch(78.64% 0.113 213.6)
XYZxyz(39.1232, 50.5880, 81.8161)
Luminance0.5059 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51CCE5 #E56A51
analogous
#51E5B4 #51CCE5 #5182E5
triadic
#51CCE5 #E551CC #CCE551
tetradic
#51CCE5 #B451E5 #E56A51 #82E551
square
#51CCE5 #B451E5 #E56A51 #82E551
split-complementary
#51CCE5 #E55182 #E5B451
monochromatic
#188CA3 #20B9D8 #51CCE5 #86DCED #BBEBF5

Accessibility & contrast

On white

1.89
#51CCE5 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.12
#51CCE5 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CCE5
11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51CCE5#FFFFFF#000000##000000
##51CCE51.001.8911.1211.12
#FFFFFF1.891.0021.0021.00
#00000011.1221.001.001.00
##00000011.1221.001.001.00

Color blindness preview

Protanopia (red-blind)
#B9C6E6
Deuteranopia (green-blind)
#A4B6E5
Tritanopia (blue-blind)
#00D6D4
Achromatopsia (no color)
#BDBDBD

Design tokens & code

CSS
--color: #51cce5;
/* rgb */ color: rgb(81, 204, 229);
/* oklch */ color: oklch(78.6% 0.113 213.6);
Tailwind
colors: {
  custom: {
    50: '#92dbed',
    500: '#51cce5',
    950: '#000000',
  },
}
SCSS
$custom: #51cce5;
$custom-light: #92dbed;
$custom-dark: #000000;
JSON
{
  "hex": "#51cce5",
  "rgb": {
    "r": 81,
    "g": 204,
    "b": 229
  },
  "hsl": {
    "h": 190.135,
    "s": 74,
    "l": 60.784
  },
  "oklch": {
    "l": 0.7864,
    "c": 0.11293,
    "h": 213.6
  },
  "luminance": 0.50592
}

Semantic roles & 50–950 ramp

primary
#51CCE5
secondary
#A64835
accent
#310FD6
background
#FCFEFE
surface
#F5FCFD
border
#CFD5D5
text
#0E1516
muted
#7F8484

Preview Lab

Preview with #51CCE5

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

Preview Lab → · Contrast checker → · Palette generator →

#51CCE5 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva