#51CCF3#51CCF3

#51CCF3 is a light, vivid cyan. Relative luminance 0.514; OKLCH L 79.2% C 0.121 H 222.6°. Best body text is #000000 at 11.28:1 contrast (WCAG AA passes).

Color values

HEX	#51CCF3
RGB	rgb(81, 204, 243)
HSL	hsl(194, 87%, 64%)
HSV	hsv(194, 67%, 95%)
CMYK	cmyk(66.7%, 16%, 0%, 4.7%)
CIE-LAB	lab(76.92, -22.25, -29.23)
CIE-LCH	lch(76.92, 36.73, 232.72°)
OKLab	oklab(79.2% -0.0888 -0.0816)
OKLCH	oklch(79.2% 0.121 222.6)
XYZ	xyz(41.1573, 51.4016, 92.5291)
Luminance	0.5141 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CCF3 #F37851

analogous

#51F3C9 #51CCF3 #517BF3

triadic

#51CCF3 #F351CC #CCF351

tetradic

#51CCF3 #C951F3 #F37851 #7BF351

square

#51CCF3 #C951F3 #F37851 #7BF351

split-complementary

#51CCF3 #F3517B #F3C951

monochromatic

#0D92BD #18BBEF #51CCF3 #8ADDF7 #C4EEFB

Accessibility & contrast

On white

1.86

#51CCF3 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.28

#51CCF3 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CCF3

11.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CCF3	#FFFFFF	#000000	##000000
##51CCF3	1.00	1.86	11.28	11.28
#FFFFFF	1.86	1.00	21.00	21.00
#000000	11.28	21.00	1.00	1.00
##000000	11.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B5C7F5

Deuteranopia (green-blind)

#9FB7F3

Tritanopia (blue-blind)

#00D8D8

Achromatopsia (no color)

#BEBEBE

Design tokens & code

CSS

--color: #51ccf3;
/* rgb */ color: rgb(81, 204, 243);
/* oklch */ color: oklch(79.2% 0.121 222.6);

Tailwind

colors: {
  custom: {
    50: '#93dbf7',
    500: '#51ccf3',
    950: '#000000',
  },
}

SCSS

$custom: #51ccf3;
$custom-light: #93dbf7;
$custom-dark: #000000;

JSON

{
  "hex": "#51ccf3",
  "rgb": {
    "r": 81,
    "g": 204,
    "b": 243
  },
  "hsl": {
    "h": 194.444,
    "s": 87.097,
    "l": 63.529
  },
  "oklch": {
    "l": 0.79199,
    "c": 0.1206,
    "h": 222.6
  },
  "luminance": 0.51406
}

Semantic roles & 50–950 ramp

primary

#51CCF3

secondary

#BB4F2D

accent

#3802E4

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51CCF3

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

Preview Lab → · Contrast checker → · Palette generator →