#51C3DB#51C3DB

#51C3DB is a light, moderate cyan. Relative luminance 0.459; OKLCH L 76.2% C 0.107 H 214.0°. Best body text is #000000 at 10.18:1 contrast (WCAG AA passes).

Color values

HEX#51C3DB
RGBrgb(81, 195, 219)
HSLhsl(190, 66%, 59%)
HSVhsv(190, 63%, 86%)
CMYKcmyk(63%, 11%, 0%, 14.1%)
CIE-LABlab(73.47, -24.94, -21.56)
CIE-LCHlch(73.47, 32.97, 220.84°)
OKLaboklab(76.15% -0.0888 -0.0599)
OKLCHoklch(76.15% 0.107 214)
XYZxyz(35.6894, 45.8902, 73.9809)
Luminance0.4589 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51C3DB #DB6951
analogous
#51DBAE #51C3DB #517EDB
triadic
#51C3DB #DB51C3 #C3DB51
tetradic
#51C3DB #AE51DB #DB6951 #7EDB51
square
#51C3DB #AE51DB #DB6951 #7EDB51
split-complementary
#51C3DB #DB517E #DBAE51
monochromatic
#1E7F93 #29ABC6 #51C3DB #84D4E5 #B6E6F0

Accessibility & contrast

On white

2.06
#51C3DB on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.18
#51C3DB on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C3DB
10.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51C3DB#FFFFFF#000000##000000
##51C3DB1.002.0610.1810.18
#FFFFFF2.061.0021.0021.00
#00000010.1821.001.001.00
##00000010.1821.001.001.00

Color blindness preview

Protanopia (red-blind)
#B1BDDC
Deuteranopia (green-blind)
#9DAEDB
Tritanopia (blue-blind)
#00CCCA
Achromatopsia (no color)
#B4B4B4

Design tokens & code

CSS
--color: #51c3db;
/* rgb */ color: rgb(81, 195, 219);
/* oklch */ color: oklch(76.2% 0.107 214.0);
Tailwind
colors: {
  custom: {
    50: '#90d5e6',
    500: '#51c3db',
    950: '#000000',
  },
}
SCSS
$custom: #51c3db;
$custom-light: #90d5e6;
$custom-dark: #000000;
JSON
{
  "hex": "#51c3db",
  "rgb": {
    "r": 81,
    "g": 195,
    "b": 219
  },
  "hsl": {
    "h": 190.435,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.76152,
    "c": 0.10714,
    "h": 214
  },
  "luminance": 0.45894
}

Semantic roles & 50–950 ramp

primary
#51C3DB
secondary
#DFB2A9
accent
#5D3FE9
background
#F9FDFE
surface
#F2FAFC
border
#CCD3D5
text
#0E1415
muted
#7E8384

Preview Lab

Preview with #51C3DB

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

Preview Lab → · Contrast checker → · Palette generator →

#51C3DB Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva