#51CCE9#51CCE9

#51CCE9 is a light, moderate cyan. Relative luminance 0.508; OKLCH L 78.8% C 0.115 H 216.3°. Best body text is #000000 at 11.16:1 contrast (WCAG AA passes).

Color values

HEX	#51CCE9
RGB	rgb(81, 204, 233)
HSL	hsl(191, 78%, 62%)
HSV	hsv(191, 65%, 91%)
CMYK	cmyk(65.2%, 12.4%, 0%, 8.6%)
CIE-LAB	lab(76.57, -25.27, -24.41)
CIE-LCH	lch(76.57, 35.14, 224.00°)
OKLab	oklab(78.8% -0.0925 -0.0679)
OKLCH	oklch(78.8% 0.115 216.3)
XYZ	xyz(39.6881, 50.8139, 84.7914)
Luminance	0.5082 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CCE9 #E96E51

analogous

#51E9BA #51CCE9 #5180E9

triadic

#51CCE9 #E951CC #CCE951

tetradic

#51CCE9 #BA51E9 #E96E51 #80E951

square

#51CCE9 #BA51E9 #E96E51 #80E951

split-complementary

#51CCE9 #E95180 #E9BA51

monochromatic

#168EAA #1CBBE0 #51CCE9 #87DCF0 #BEECF7

Accessibility & contrast

On white

1.88

#51CCE9 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.16

#51CCE9 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CCE9

11.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CCE9	#FFFFFF	#000000	##000000
##51CCE9	1.00	1.88	11.16	11.16
#FFFFFF	1.88	1.00	21.00	21.00
#000000	11.16	21.00	1.00	1.00
##000000	11.16	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C6EB

Deuteranopia (green-blind)

#A3B6E9

Tritanopia (blue-blind)

#00D6D5

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #51cce9;
/* rgb */ color: rgb(81, 204, 233);
/* oklch */ color: oklch(78.8% 0.115 216.3);

Tailwind

colors: {
  custom: {
    50: '#92dbf0',
    500: '#51cce9',
    950: '#000000',
  },
}

SCSS

$custom: #51cce9;
$custom-light: #92dbf0;
$custom-dark: #000000;

JSON

{
  "hex": "#51cce9",
  "rgb": {
    "r": 81,
    "g": 204,
    "b": 233
  },
  "hsl": {
    "h": 191.447,
    "s": 77.551,
    "l": 61.569
  },
  "oklch": {
    "l": 0.78796,
    "c": 0.1148,
    "h": 216.3
  },
  "luminance": 0.50818
}

Semantic roles & 50–950 ramp

primary

#51CCE9

secondary

#AB4A33

accent

#330CDA

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51CCE9

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

Preview Lab → · Contrast checker → · Palette generator →