#51CBE7#51CBE7

#51CBE7 is a light, moderate cyan. Relative luminance 0.502; OKLCH L 78.5% C 0.114 H 215.7°. Best body text is #000000 at 11.05:1 contrast (WCAG AA passes).

Color values

HEX#51CBE7
RGBrgb(81, 203, 231)
HSLhsl(191, 76%, 61%)
HSVhsv(191, 65%, 91%)
CMYKcmyk(64.9%, 12.1%, 0%, 9.4%)
CIE-LABlab(76.21, -25.37, -23.88)
CIE-LCHlch(76.21, 34.84, 223.26°)
OKLaboklab(78.49% -0.0923 -0.0664)
OKLCHoklch(78.49% 0.114 215.7)
XYZxyz(39.1671, 50.2265, 83.2163)
Luminance0.5023 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51CBE7 #E76D51
analogous
#51E7B8 #51CBE7 #5180E7
triadic
#51CBE7 #E751CB #CBE751
tetradic
#51CBE7 #B851E7 #E76D51 #80E751
square
#51CBE7 #B851E7 #E76D51 #80E751
split-complementary
#51CBE7 #E75180 #E7B851
monochromatic
#178CA7 #1EB9DC #51CBE7 #87DBEE #BDEBF6

Accessibility & contrast

On white

1.90
#51CBE7 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.05
#51CBE7 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CBE7
11.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51CBE7#FFFFFF#000000##000000
##51CBE71.001.9011.0511.05
#FFFFFF1.901.0021.0021.00
#00000011.0521.001.001.00
##00000011.0521.001.001.00

Color blindness preview

Protanopia (red-blind)
#B8C5E9
Deuteranopia (green-blind)
#A2B5E7
Tritanopia (blue-blind)
#00D5D4
Achromatopsia (no color)
#BCBCBC

Design tokens & code

CSS
--color: #51cbe7;
/* rgb */ color: rgb(81, 203, 231);
/* oklch */ color: oklch(78.5% 0.114 215.7);
Tailwind
colors: {
  custom: {
    50: '#92dbee',
    500: '#51cbe7',
    950: '#000000',
  },
}
SCSS
$custom: #51cbe7;
$custom-light: #92dbee;
$custom-dark: #000000;
JSON
{
  "hex": "#51cbe7",
  "rgb": {
    "r": 81,
    "g": 203,
    "b": 231
  },
  "hsl": {
    "h": 191.2,
    "s": 75.758,
    "l": 61.176
  },
  "oklch": {
    "l": 0.78485,
    "c": 0.11374,
    "h": 215.7
  },
  "luminance": 0.50231
}

Semantic roles & 50–950 ramp

primary
#51CBE7
secondary
#A84A34
accent
#330ED8
background
#FCFEFF
surface
#F5FBFE
border
#CFD4D6
text
#0E1516
muted
#7F8485

Preview Lab

Preview with #51CBE7

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

Preview Lab → · Contrast checker → · Palette generator →

#51CBE7 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva