#51CFE9#51CFE9

#51CFE9 is a light, moderate cyan. Relative luminance 0.523; OKLCH L 79.5% C 0.115 H 213.9°. Best body text is #000000 at 11.45:1 contrast (WCAG AA passes).

Color values

HEX#51CFE9
RGBrgb(81, 207, 233)
HSLhsl(190, 78%, 62%)
HSVhsv(190, 65%, 91%)
CMYKcmyk(65.2%, 11.2%, 0%, 8.6%)
CIE-LABlab(77.43, -26.76, -23.09)
CIE-LCHlch(77.43, 35.34, 220.78°)
OKLaboklab(79.49% -0.0956 -0.0642)
OKLCHoklch(79.49% 0.115 213.9)
XYZxyz(40.4080, 52.2538, 85.0314)
Luminance0.5226 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51CFE9 #E96B51
analogous
#51E9B7 #51CFE9 #5183E9
triadic
#51CFE9 #E951CF #CFE951
tetradic
#51CFE9 #B751E9 #E96B51 #83E951
square
#51CFE9 #B751E9 #E96B51 #83E951
split-complementary
#51CFE9 #E95183 #E9B751
monochromatic
#1691AA #1CBFE0 #51CFE9 #87DEF0 #BEEDF7

Accessibility & contrast

On white

1.83
#51CFE9 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.45
#51CFE9 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CFE9
11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51CFE9#FFFFFF#000000##000000
##51CFE91.001.8311.4511.45
#FFFFFF1.831.0021.0021.00
#00000011.4521.001.001.00
##00000011.4521.001.001.00

Color blindness preview

Protanopia (red-blind)
#BCC9EB
Deuteranopia (green-blind)
#A6B8E9
Tritanopia (blue-blind)
#00D9D7
Achromatopsia (no color)
#BFBFBF

Design tokens & code

CSS
--color: #51cfe9;
/* rgb */ color: rgb(81, 207, 233);
/* oklch */ color: oklch(79.5% 0.115 213.9);
Tailwind
colors: {
  custom: {
    50: '#93def0',
    500: '#51cfe9',
    950: '#000000',
  },
}
SCSS
$custom: #51cfe9;
$custom-light: #93def0;
$custom-dark: #000000;
JSON
{
  "hex": "#51cfe9",
  "rgb": {
    "r": 81,
    "g": 207,
    "b": 233
  },
  "hsl": {
    "h": 190.263,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.79492,
    "c": 0.11512,
    "h": 213.9
  },
  "luminance": 0.52258
}

Semantic roles & 50–950 ramp

primary
#51CFE9
secondary
#AB4733
accent
#2F0CDA
background
#FCFEFF
surface
#F5FCFE
border
#CFD5D6
text
#0E1516
muted
#7F8485

Preview Lab

Preview with #51CFE9

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

Preview Lab → · Contrast checker → · Palette generator →

#51CFE9 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva