#51C7F2#51C7F2

#51C7F2 is a light, vivid cyan. Relative luminance 0.490; OKLCH L 78.0% C 0.121 H 225.8°. Best body text is #000000 at 10.80:1 contrast (WCAG AA passes).

Color values

HEX	#51C7F2
RGB	rgb(81, 199, 242)
HSL	hsl(196, 86%, 63%)
HSV	hsv(196, 67%, 95%)
CMYK	cmyk(66.5%, 17.8%, 0%, 5.1%)
CIE-LAB	lab(75.45, -20.01, -30.95)
CIE-LCH	lch(75.45, 36.85, 237.12°)
OKLab	oklab(78.01% -0.0842 -0.0865)
OKLCH	oklch(78.01% 0.121 225.8)
XYZ	xyz(39.8373, 49.0026, 91.3461)
Luminance	0.4901 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C7F2 #F27C51

analogous

#51F2CC #51C7F2 #5176F2

triadic

#51C7F2 #F251C7 #C7F251

tetradic

#51C7F2 #CC51F2 #F27C51 #76F251

square

#51C7F2 #CC51F2 #F27C51 #76F251

split-complementary

#51C7F2 #F25176 #F2CC51

monochromatic

#0E8DBB #18B5EE #51C7F2 #8AD9F6 #C3ECFB

Accessibility & contrast

On white

1.94

#51C7F2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.80

#51C7F2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C7F2

10.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C7F2	#FFFFFF	#000000	##000000
##51C7F2	1.00	1.94	10.80	10.80
#FFFFFF	1.94	1.00	21.00	21.00
#000000	10.80	21.00	1.00	1.00
##000000	10.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B0C3F4

Deuteranopia (green-blind)

#99B3F2

Tritanopia (blue-blind)

#00D4D5

Achromatopsia (no color)

#BABABA

Design tokens & code

CSS

--color: #51c7f2;
/* rgb */ color: rgb(81, 199, 242);
/* oklch */ color: oklch(78.0% 0.121 225.8);

Tailwind

colors: {
  custom: {
    50: '#93d8f6',
    500: '#51c7f2',
    950: '#000000',
  },
}

SCSS

$custom: #51c7f2;
$custom-light: #93d8f6;
$custom-dark: #000000;

JSON

{
  "hex": "#51c7f2",
  "rgb": {
    "r": 81,
    "g": 199,
    "b": 242
  },
  "hsl": {
    "h": 196.025,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.78011,
    "c": 0.12076,
    "h": 225.8
  },
  "luminance": 0.49007
}

Semantic roles & 50–950 ramp

primary

#51C7F2

secondary

#ECC2B3

accent

#3F03E3

background

#F9FDFF

surface

#F2FAFE

border

#CCD3D6

text

#0E1417

muted

#7E8385

Preview Lab

Preview with #51C7F2

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

Preview Lab → · Contrast checker → · Palette generator →