#51C0E2#51C0E2

#51C0E2 is a light, moderate cyan. Relative luminance 0.449; OKLCH L 75.7% C 0.111 H 221.4°. Best body text is #000000 at 9.99:1 contrast (WCAG AA passes).

Color values

HEX#51C0E2
RGBrgb(81, 192, 226)
HSLhsl(194, 71%, 60%)
HSVhsv(194, 64%, 89%)
CMYKcmyk(64.2%, 15%, 0%, 11.4%)
CIE-LABlab(72.85, -21.33, -26.31)
CIE-LCHlch(72.85, 33.87, 230.97°)
OKLaboklab(75.73% -0.0831 -0.0733)
OKLCHoklch(75.73% 0.111 221.4)
XYZxyz(35.9649, 44.9358, 78.7148)
Luminance0.4494 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51C0E2 #E27351
analogous
#51E2BC #51C0E2 #5177E2
triadic
#51C0E2 #E251C0 #C0E251
tetradic
#51C0E2 #BC51E2 #E27351 #77E251
square
#51C0E2 #BC51E2 #E27351 #77E251
split-complementary
#51C0E2 #E25177 #E2BC51
monochromatic
#1A7F9E #23AAD3 #51C0E2 #85D3EB #BAE6F3

Accessibility & contrast

On white

2.10
#51C0E2 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

9.99
#51C0E2 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C0E2
9.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51C0E2#FFFFFF#000000##000000
##51C0E21.002.109.999.99
#FFFFFF2.101.0021.0021.00
#0000009.9921.001.001.00
##0000009.9921.001.001.00

Color blindness preview

Protanopia (red-blind)
#ACBBE4
Deuteranopia (green-blind)
#97ACE2
Tritanopia (blue-blind)
#00CBCB
Achromatopsia (no color)
#B3B3B3

Design tokens & code

CSS
--color: #51c0e2;
/* rgb */ color: rgb(81, 192, 226);
/* oklch */ color: oklch(75.7% 0.111 221.4);
Tailwind
colors: {
  custom: {
    50: '#91d3eb',
    500: '#51c0e2',
    950: '#000000',
  },
}
SCSS
$custom: #51c0e2;
$custom-light: #91d3eb;
$custom-dark: #000000;
JSON
{
  "hex": "#51c0e2",
  "rgb": {
    "r": 81,
    "g": 192,
    "b": 226
  },
  "hsl": {
    "h": 194.069,
    "s": 71.429,
    "l": 60.196
  },
  "oklch": {
    "l": 0.75733,
    "c": 0.11082,
    "h": 221.4
  },
  "luminance": 0.4494
}

Semantic roles & 50–950 ramp

primary
#51C0E2
secondary
#E3B9AC
accent
#3F12D3
background
#F9FCFE
surface
#F2F9FD
border
#CCD2D5
text
#0E1416
muted
#7E8284

Preview Lab

Preview with #51C0E2

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

Preview Lab → · Contrast checker → · Palette generator →

#51C0E2 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva