#51C1DC#51C1DC

#51C1DC is a light, moderate cyan. Relative luminance 0.451; OKLCH L 75.7% C 0.107 H 216.4°. Best body text is #000000 at 10.01:1 contrast (WCAG AA passes).

Color values

HEX#51C1DC
RGBrgb(81, 193, 220)
HSLhsl(192, 67%, 59%)
HSVhsv(192, 63%, 86%)
CMYKcmyk(63.2%, 12.3%, 0%, 13.7%)
CIE-LABlab(72.93, -23.64, -22.94)
CIE-LCHlch(72.93, 32.94, 224.13°)
OKLaboklab(75.72% -0.0864 -0.0638)
OKLCHoklch(75.72% 0.107 216.4)
XYZxyz(35.3763, 45.0528, 74.5280)
Luminance0.4506 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51C1DC #DC6C51
analogous
#51DCB2 #51C1DC #517CDC
triadic
#51C1DC #DC51C1 #C1DC51
tetradic
#51C1DC #B251DC #DC6C51 #7CDC51
square
#51C1DC #B251DC #DC6C51 #7CDC51
split-complementary
#51C1DC #DC517C #DCB251
monochromatic
#1E7E95 #28A9C8 #51C1DC #84D3E6 #B7E5F0

Accessibility & contrast

On white

2.10
#51C1DC on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

10.01
#51C1DC on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C1DC
10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51C1DC#FFFFFF#000000##000000
##51C1DC1.002.1010.0110.01
#FFFFFF2.101.0021.0021.00
#00000010.0121.001.001.00
##00000010.0121.001.001.00

Color blindness preview

Protanopia (red-blind)
#AFBBDE
Deuteranopia (green-blind)
#9BADDC
Tritanopia (blue-blind)
#00CBC9
Achromatopsia (no color)
#B3B3B3

Design tokens & code

CSS
--color: #51c1dc;
/* rgb */ color: rgb(81, 193, 220);
/* oklch */ color: oklch(75.7% 0.107 216.4);
Tailwind
colors: {
  custom: {
    50: '#90d4e7',
    500: '#51c1dc',
    950: '#000000',
  },
}
SCSS
$custom: #51c1dc;
$custom-light: #90d4e7;
$custom-dark: #000000;
JSON
{
  "hex": "#51c1dc",
  "rgb": {
    "r": 81,
    "g": 193,
    "b": 220
  },
  "hsl": {
    "h": 191.655,
    "s": 66.507,
    "l": 59.02
  },
  "oklch": {
    "l": 0.75724,
    "c": 0.10739,
    "h": 216.4
  },
  "luminance": 0.45057
}

Semantic roles & 50–950 ramp

primary
#51C1DC
secondary
#E0B4A9
accent
#603EE9
background
#F9FDFE
surface
#F2FAFC
border
#CCD3D5
text
#0E1416
muted
#7E8384

Preview Lab

Preview with #51C1DC

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

Preview Lab → · Contrast checker → · Palette generator →

#51C1DC Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva