#51C2DD#51C2DD

#51C2DD is a light, moderate cyan. Relative luminance 0.456; OKLCH L 76.0% C 0.108 H 216.3°. Best body text is #000000 at 10.11:1 contrast (WCAG AA passes).

Color values

HEX#51C2DD
RGBrgb(81, 194, 221)
HSLhsl(192, 67%, 59%)
HSVhsv(192, 63%, 87%)
CMYKcmyk(63.3%, 12.2%, 0%, 13.3%)
CIE-LABlab(73.25, -23.85, -22.98)
CIE-LCHlch(73.25, 33.12, 223.94°)
OKLaboklab(76% -0.087 -0.0639)
OKLCHoklch(76% 0.108 216.3)
XYZxyz(35.7309, 45.5496, 75.3015)
Luminance0.4555 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51C2DD #DD6C51
analogous
#51DDB2 #51C2DD #517CDD
triadic
#51C2DD #DD51C2 #C2DD51
tetradic
#51C2DD #B251DD #DD6C51 #7CDD51
square
#51C2DD #B251DD #DD6C51 #7CDD51
split-complementary
#51C2DD #DD517C #DDB251
monochromatic
#1D7F96 #27AAC9 #51C2DD #84D4E7 #B7E6F1

Accessibility & contrast

On white

2.08
#51C2DD on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.11
#51C2DD on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C2DD
10.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51C2DD#FFFFFF#000000##000000
##51C2DD1.002.0810.1110.11
#FFFFFF2.081.0021.0021.00
#00000010.1121.001.001.00
##00000010.1121.001.001.00

Color blindness preview

Protanopia (red-blind)
#B0BCDF
Deuteranopia (green-blind)
#9BADDD
Tritanopia (blue-blind)
#00CCCA
Achromatopsia (no color)
#B4B4B4

Design tokens & code

CSS
--color: #51c2dd;
/* rgb */ color: rgb(81, 194, 221);
/* oklch */ color: oklch(76.0% 0.108 216.3);
Tailwind
colors: {
  custom: {
    50: '#90d4e7',
    500: '#51c2dd',
    950: '#000000',
  },
}
SCSS
$custom: #51c2dd;
$custom-light: #90d4e7;
$custom-dark: #000000;
JSON
{
  "hex": "#51c2dd",
  "rgb": {
    "r": 81,
    "g": 194,
    "b": 221
  },
  "hsl": {
    "h": 191.571,
    "s": 67.308,
    "l": 59.216
  },
  "oklch": {
    "l": 0.75997,
    "c": 0.10798,
    "h": 216.3
  },
  "luminance": 0.45553
}

Semantic roles & 50–950 ramp

primary
#51C2DD
secondary
#E0B4AA
accent
#5F3EEA
background
#F9FDFE
surface
#F2FAFC
border
#CCD3D5
text
#0E1416
muted
#7E8384

Preview Lab

Preview with #51C2DD

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

Preview Lab → · Contrast checker → · Palette generator →

#51C2DD Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva