#51C1DD#51C1DD

#51C1DD is a light, moderate cyan. Relative luminance 0.451; OKLCH L 75.8% C 0.108 H 217.1°. Best body text is #000000 at 10.02:1 contrast (WCAG AA passes).

Color values

HEX#51C1DD
RGBrgb(81, 193, 221)
HSLhsl(192, 67%, 59%)
HSVhsv(192, 63%, 87%)
CMYKcmyk(63.3%, 12.7%, 0%, 13.3%)
CIE-LABlab(72.96, -23.34, -23.43)
CIE-LCHlch(72.96, 33.07, 225.10°)
OKLaboklab(75.76% -0.086 -0.0652)
OKLCHoklch(75.76% 0.108 217.1)
XYZxyz(35.5091, 45.1060, 75.2275)
Luminance0.4511 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51C1DD #DD6D51
analogous
#51DDB3 #51C1DD #517BDD
triadic
#51C1DD #DD51C1 #C1DD51
tetradic
#51C1DD #B351DD #DD6D51 #7BDD51
square
#51C1DD #B351DD #DD6D51 #7BDD51
split-complementary
#51C1DD #DD517B #DDB351
monochromatic
#1D7E96 #27A9C9 #51C1DD #84D3E7 #B7E5F1

Accessibility & contrast

On white

2.10
#51C1DD on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.02
#51C1DD on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C1DD
10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51C1DD#FFFFFF#000000##000000
##51C1DD1.002.1010.0210.02
#FFFFFF2.101.0021.0021.00
#00000010.0221.001.001.00
##00000010.0221.001.001.00

Color blindness preview

Protanopia (red-blind)
#AEBCDF
Deuteranopia (green-blind)
#9AADDD
Tritanopia (blue-blind)
#00CBCA
Achromatopsia (no color)
#B3B3B3

Design tokens & code

CSS
--color: #51c1dd;
/* rgb */ color: rgb(81, 193, 221);
/* oklch */ color: oklch(75.8% 0.108 217.1);
Tailwind
colors: {
  custom: {
    50: '#90d4e7',
    500: '#51c1dd',
    950: '#000000',
  },
}
SCSS
$custom: #51c1dd;
$custom-light: #90d4e7;
$custom-dark: #000000;
JSON
{
  "hex": "#51c1dd",
  "rgb": {
    "r": 81,
    "g": 193,
    "b": 221
  },
  "hsl": {
    "h": 192,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.75763,
    "c": 0.10791,
    "h": 217.1
  },
  "luminance": 0.4511
}

Semantic roles & 50–950 ramp

primary
#51C1DD
secondary
#E0B4AA
accent
#603EEA
background
#F9FDFE
surface
#F2FAFC
border
#CCD3D5
text
#0E1416
muted
#7E8384

Preview Lab

Preview with #51C1DD

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

Preview Lab → · Contrast checker → · Palette generator →

#51C1DD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva