#51CAE3#51CAE3

#51CAE3 is a light, moderate cyan. Relative luminance 0.495; OKLCH L 78.1% C 0.112 H 213.8°. Best body text is #000000 at 10.91:1 contrast (WCAG AA passes).

Color values

HEX#51CAE3
RGBrgb(81, 202, 227)
HSLhsl(190, 72%, 60%)
HSVhsv(190, 64%, 89%)
CMYKcmyk(64.3%, 11%, 0%, 11%)
CIE-LABlab(75.78, -26.06, -22.37)
CIE-LCHlch(75.78, 34.35, 220.64°)
OKLaboklab(78.1% -0.0929 -0.0622)
OKLCHoklch(78.1% 0.112 213.8)
XYZxyz(38.3732, 49.5323, 80.1965)
Luminance0.4954 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51CAE3 #E36A51
analogous
#51E3B3 #51CAE3 #5181E3
triadic
#51CAE3 #E351CA #CAE351
tetradic
#51CAE3 #B351E3 #E36A51 #81E351
square
#51CAE3 #B351E3 #E36A51 #81E351
split-complementary
#51CAE3 #E35181 #E3B351
monochromatic
#1A89A0 #22B6D5 #51CAE3 #86DAEB #BAEAF4

Accessibility & contrast

On white

1.93
#51CAE3 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.91
#51CAE3 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CAE3
10.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51CAE3#FFFFFF#000000##000000
##51CAE31.001.9310.9110.91
#FFFFFF1.931.0021.0021.00
#00000010.9121.001.001.00
##00000010.9121.001.001.00

Color blindness preview

Protanopia (red-blind)
#B8C4E4
Deuteranopia (green-blind)
#A2B4E3
Tritanopia (blue-blind)
#00D4D2
Achromatopsia (no color)
#BBBBBB

Design tokens & code

CSS
--color: #51cae3;
/* rgb */ color: rgb(81, 202, 227);
/* oklch */ color: oklch(78.1% 0.112 213.8);
Tailwind
colors: {
  custom: {
    50: '#91daeb',
    500: '#51cae3',
    950: '#000000',
  },
}
SCSS
$custom: #51cae3;
$custom-light: #91daeb;
$custom-dark: #000000;
JSON
{
  "hex": "#51cae3",
  "rgb": {
    "r": 81,
    "g": 202,
    "b": 227
  },
  "hsl": {
    "h": 190.274,
    "s": 72.277,
    "l": 60.392
  },
  "oklch": {
    "l": 0.78097,
    "c": 0.11176,
    "h": 213.8
  },
  "luminance": 0.49536
}

Semantic roles & 50–950 ramp

primary
#51CAE3
secondary
#E4B6AC
accent
#3311D4
background
#F9FDFE
surface
#F2FAFD
border
#CCD3D5
text
#0E1516
muted
#7E8384

Preview Lab

Preview with #51CAE3

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

Preview Lab → · Contrast checker → · Palette generator →

#51CAE3 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva