#51CDF2#51CDF2

#51CDF2 is a light, moderate cyan. Relative luminance 0.518; OKLCH L 79.4% C 0.120 H 221.2°. Best body text is #000000 at 11.36:1 contrast (WCAG AA passes).

Color values

HEX	#51CDF2
RGB	rgb(81, 205, 242)
HSL	hsl(194, 86%, 63%)
HSV	hsv(194, 67%, 95%)
CMYK	cmyk(66.5%, 15.3%, 0%, 5.1%)
CIE-LAB	lab(77.17, -23.06, -28.31)
CIE-LCH	lch(77.17, 36.51, 230.83°)
OKLab	oklab(79.39% -0.0901 -0.079)
OKLCH	oklch(79.39% 0.12 221.2)
XYZ	xyz(41.2451, 51.8182, 91.8154)
Luminance	0.5182 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CDF2 #F27651

analogous

#51F2C6 #51CDF2 #517CF2

triadic

#51CDF2 #F251CD #CDF251

tetradic

#51CDF2 #C651F2 #F27651 #7CF251

square

#51CDF2 #C651F2 #F27651 #7CF251

split-complementary

#51CDF2 #F2517C #F2C651

monochromatic

#0E93BB #18BDEE #51CDF2 #8ADDF6 #C3EEFB

Accessibility & contrast

On white

1.85

#51CDF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.36

#51CDF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CDF2

11.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CDF2	#FFFFFF	#000000	##000000
##51CDF2	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)

#B7C8F4

Deuteranopia (green-blind)

#A0B7F2

Tritanopia (blue-blind)

#00D9D9

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #51cdf2;
/* rgb */ color: rgb(81, 205, 242);
/* oklch */ color: oklch(79.4% 0.120 221.2);

Tailwind

colors: {
  custom: {
    50: '#93dcf6',
    500: '#51cdf2',
    950: '#000000',
  },
}

SCSS

$custom: #51cdf2;
$custom-light: #93dcf6;
$custom-dark: #000000;

JSON

{
  "hex": "#51cdf2",
  "rgb": {
    "r": 81,
    "g": 205,
    "b": 242
  },
  "hsl": {
    "h": 193.789,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.79387,
    "c": 0.11985,
    "h": 221.2
  },
  "luminance": 0.51823
}

Semantic roles & 50–950 ramp

primary

#51CDF2

secondary

#B94E2E

accent

#3603E3

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51CDF2

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

Preview Lab → · Contrast checker → · Palette generator →