#51D2F6#51D2F6

#51D2F6 is a light, vivid cyan. Relative luminance 0.545; OKLCH L 80.7% C 0.122 H 219.9°. Best body text is #000000 at 11.90:1 contrast (WCAG AA passes).

Color values

HEX#51D2F6
RGBrgb(81, 210, 246)
HSLhsl(193, 90%, 64%)
HSVhsv(193, 67%, 96%)
CMYKcmyk(67.1%, 14.6%, 0%, 3.5%)
CIE-LABlab(78.75, -24.36, -28.03)
CIE-LCHlch(78.75, 37.14, 229.01°)
OKLaboklab(80.7% -0.0936 -0.0782)
OKLCHoklch(80.7% 0.122 219.9)
XYZxyz(43.0676, 54.4916, 95.4191)
Luminance0.5450 (WCAG relative)
Temperaturecool
Familycyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary
#51D2F6 #F67551
analogous
#51F6C8 #51D2F6 #5180F6
triadic
#51D2F6 #F651D2 #D2F651
tetradic
#51D2F6 #C851F6 #F67551 #80F651
square
#51D2F6 #C851F6 #F67551 #80F651
split-complementary
#51D2F6 #F65180 #F6C851
monochromatic
#0A9AC3 #17C3F3 #51D2F6 #8BE1F9 #C5F0FC

Accessibility & contrast

On white

1.76
#51D2F6 on #FFFFFF
AA ✗AA large ✗AAA ✗

On black

11.90
#51D2F6 on #000000
AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D2F6
11.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg##51D2F6#FFFFFF#000000##000000
##51D2F61.001.7611.9011.90
#FFFFFF1.761.0021.0021.00
#00000011.9021.001.001.00
##00000011.9021.001.001.00

Color blindness preview

Protanopia (red-blind)
#BCCDF8
Deuteranopia (green-blind)
#A5BCF6
Tritanopia (blue-blind)
#00DEDD
Achromatopsia (no color)
#C3C3C3

Design tokens & code

CSS
--color: #51d2f6;
/* rgb */ color: rgb(81, 210, 246);
/* oklch */ color: oklch(80.7% 0.122 219.9);
Tailwind
colors: {
  custom: {
    50: '#94e0f9',
    500: '#51d2f6',
    950: '#000000',
  },
}
SCSS
$custom: #51d2f6;
$custom-light: #94e0f9;
$custom-dark: #000000;
JSON
{
  "hex": "#51d2f6",
  "rgb": {
    "r": 81,
    "g": 210,
    "b": 246
  },
  "hsl": {
    "h": 193.091,
    "s": 90.164,
    "l": 64.118
  },
  "oklch": {
    "l": 0.80698,
    "c": 0.12195,
    "h": 219.9
  },
  "luminance": 0.54496
}

Semantic roles & 50–950 ramp

primary
#51D2F6
secondary
#C04C2B
accent
#3200E6
background
#FCFEFF
surface
#F5FCFF
border
#CFD5D7
text
#0F1517
muted
#808485

Preview Lab

Preview with #51D2F6

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

Preview Lab → · Contrast checker → · Palette generator →

#51D2F6 Color — HEX, RGB, HSL, OKLCH & Contrast — Tintiva