#51CCF9#51CCF9

#51CCF9 is a light, vivid cyan. Relative luminance 0.518; OKLCH L 79.4% C 0.125 H 226.0°. Best body text is #000000 at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#51CCF9
RGB	rgb(81, 204, 249)
HSL	hsl(196, 93%, 65%)
HSV	hsv(196, 67%, 98%)
CMYK	cmyk(67.5%, 18.1%, 0%, 2.4%)
CIE-LAB	lab(77.14, -20.40, -32.10)
CIE-LCH	lch(77.14, 38.04, 237.56°)
OKLab	oklab(79.45% -0.0866 -0.0898)
OKLCH	oklch(79.45% 0.125 226)
XYZ	xyz(42.0782, 51.7700, 97.3792)
Luminance	0.5178 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CCF9 #F97E51

analogous

#51F9D2 #51CCF9 #5178F9

triadic

#51CCF9 #F951CC #CCF951

tetradic

#51CCF9 #D251F9 #F97E51 #78F951

square

#51CCF9 #D251F9 #F97E51 #78F951

split-complementary

#51CCF9 #F95178 #F9D251

monochromatic

#0795C9 #16BBF7 #51CCF9 #8CDDFB #C7EFFD

Accessibility & contrast

On white

1.85

#51CCF9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.36

#51CCF9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CCF9

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CCF9	#FFFFFF	#000000	##000000
##51CCF9	1.00	1.85	11.36	11.36
#FFFFFF	1.85	1.00	21.00	21.00
#000000	11.36	21.00	1.00	1.00
##000000	11.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B4C8FB

Deuteranopia (green-blind)

#9CB7F8

Tritanopia (blue-blind)

#00D9DB

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #51ccf9;
/* rgb */ color: rgb(81, 204, 249);
/* oklch */ color: oklch(79.4% 0.125 226.0);

Tailwind

colors: {
  custom: {
    50: '#94dbfb',
    500: '#51ccf9',
    950: '#000000',
  },
}

SCSS

$custom: #51ccf9;
$custom-light: #94dbfb;
$custom-dark: #000000;

JSON

{
  "hex": "#51ccf9",
  "rgb": {
    "r": 81,
    "g": 204,
    "b": 249
  },
  "hsl": {
    "h": 196.071,
    "s": 93.333,
    "l": 64.706
  },
  "oklch": {
    "l": 0.79449,
    "c": 0.12477,
    "h": 226
  },
  "luminance": 0.51775
}

Semantic roles & 50–950 ramp

primary

#51CCF9

secondary

#C55329

accent

#3D00E6

background

#FCFEFF

surface

#F5FBFF

border

#CFD4D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #51CCF9

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

Preview Lab → · Contrast checker → · Palette generator →