#51DDFE#51DDFE

#51DDFE is a very light, vivid cyan. Relative luminance 0.606; OKLCH L 83.5% C 0.126 H 216.7°. Best body text is #000000 at 13.12:1 contrast (WCAG AA passes).

Color values

HEX	#51DDFE
RGB	rgb(81, 221, 254)
HSL	hsl(191, 99%, 66%)
HSV	hsv(191, 68%, 100%)
CMYK	cmyk(68.1%, 13%, 0%, 0.4%)
CIE-LAB	lab(82.17, -27.39, -27.05)
CIE-LCH	lch(82.17, 38.49, 224.64°)
OKLab	oklab(83.54% -0.1013 -0.0754)
OKLCH	oklch(83.54% 0.126 216.7)
XYZ	xyz(47.1317, 60.6127, 102.9622)
Luminance	0.6062 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51DDFE #FE7251

analogous

#51FEC8 #51DDFE #5186FE

triadic

#51DDFE #FE51DD #DDFE51

tetradic

#51DDFE #C851FE #FE7251 #86FE51

square

#51DDFE #C851FE #FE7251 #86FE51

split-complementary

#51DDFE #FE5186 #FEC851

monochromatic

#01ABD3 #14D1FE #51DDFE #8EE9FE #CBF5FF

Accessibility & contrast

On white

1.60

#51DDFE on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.12

#51DDFE on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51DDFE

13.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51DDFE	#FFFFFF	#000000	##000000
##51DDFE	1.00	1.60	13.12	13.12
#FFFFFF	1.60	1.00	21.00	21.00
#000000	13.12	21.00	1.00	1.00
##000000	13.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C7D7FF

Deuteranopia (green-blind)

#AFC5FE

Tritanopia (blue-blind)

#00E9E7

Achromatopsia (no color)

#CCCCCC

Design tokens & code

CSS

--color: #51ddfe;
/* rgb */ color: rgb(81, 221, 254);
/* oklch */ color: oklch(83.5% 0.126 216.7);

Tailwind

colors: {
  custom: {
    50: '#96e7fe',
    500: '#51ddfe',
    950: '#000000',
  },
}

SCSS

$custom: #51ddfe;
$custom-light: #96e7fe;
$custom-dark: #000000;

JSON

{
  "hex": "#51ddfe",
  "rgb": {
    "r": 81,
    "g": 221,
    "b": 254
  },
  "hsl": {
    "h": 191.445,
    "s": 98.857,
    "l": 65.686
  },
  "oklch": {
    "l": 0.83539,
    "c": 0.12624,
    "h": 216.7
  },
  "luminance": 0.60618
}

Semantic roles & 50–950 ramp

primary

#51DDFE

secondary

#CE4625

accent

#2C00E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1617

muted

#808485

Preview Lab

Preview with #51DDFE

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

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