#51C7E7#51C7E7

#51C7E7 is a light, moderate cyan. Relative luminance 0.484; OKLCH L 77.6% C 0.114 H 219.0°. Best body text is #000000 at 10.67:1 contrast (WCAG AA passes).

Color values

HEX#51C7E7
RGBrgb(81, 199, 231)
HSLhsl(193, 76%, 61%)
HSVhsv(193, 65%, 91%)
CMYKcmyk(64.9%, 13.9%, 0%, 9.4%)
CIE-LABlab(75.05, -23.37, -25.64)
CIE-LCHlch(75.05, 34.69, 227.66°)
OKLaboklab(77.56% -0.0883 -0.0714)
OKLCHoklch(77.56% 0.114 219)
XYZxyz(38.2347, 48.3616, 82.9055)
Luminance0.4837 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51C7E7 #E77151
analogous
#51E7BC #51C7E7 #517CE7
triadic
#51C7E7 #E751C7 #C7E751
tetradic
#51C7E7 #BC51E7 #E77151 #7CE751
square
#51C7E7 #BC51E7 #E77151 #7CE751
split-complementary
#51C7E7 #E7517C #E7BC51
monochromatic
#1788A7 #1EB4DC #51C7E7 #87D8EE #BDEAF6

Accessibility & contrast

On white

1.97
#51C7E7 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.67
#51C7E7 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C7E7
10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51C7E7#FFFFFF#000000##000000
##51C7E71.001.9710.6710.67
#FFFFFF1.971.0021.0021.00
#00000010.6721.001.001.00
##00000010.6721.001.001.00

Color blindness preview

Protanopia (red-blind)
#B3C2E9
Deuteranopia (green-blind)
#9EB2E7
Tritanopia (blue-blind)
#00D2D1
Achromatopsia (no color)
#B9B9B9

Design tokens & code

CSS
--color: #51c7e7;
/* rgb */ color: rgb(81, 199, 231);
/* oklch */ color: oklch(77.6% 0.114 219.0);
Tailwind
colors: {
  custom: {
    50: '#92d8ee',
    500: '#51c7e7',
    950: '#000000',
  },
}
SCSS
$custom: #51c7e7;
$custom-light: #92d8ee;
$custom-dark: #000000;
JSON
{
  "hex": "#51c7e7",
  "rgb": {
    "r": 81,
    "g": 199,
    "b": 231
  },
  "hsl": {
    "h": 192.8,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.77558,
    "c": 0.11357,
    "h": 219
  },
  "luminance": 0.48366
}

Semantic roles & 50–950 ramp

primary
#51C7E7
secondary
#E6BAAE
accent
#390ED8
background
#F9FDFE
surface
#F2FAFD
border
#CCD3D5
text
#0E1416
muted
#7E8384

Preview Lab

Preview with #51C7E7

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

Preview Lab → · Contrast checker → · Palette generator →

#51C7E7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva