#51CAF2#51CAF2

#51CAF2 is a light, vivid cyan. Relative luminance 0.504; OKLCH L 78.7% C 0.120 H 223.5°. Best body text is #000000 at 11.08:1 contrast (WCAG AA passes).

Color values

HEX	#51CAF2
RGB	rgb(81, 202, 242)
HSL	hsl(195, 86%, 63%)
HSV	hsv(195, 67%, 95%)
CMYK	cmyk(66.5%, 16.5%, 0%, 5.1%)
CIE-LAB	lab(76.31, -21.54, -29.63)
CIE-LCH	lch(76.31, 36.63, 233.98°)
OKLab	oklab(78.7% -0.0872 -0.0827)
OKLCH	oklch(78.7% 0.12 223.5)
XYZ	xyz(40.5344, 50.3968, 91.5785)
Luminance	0.5040 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CAF2 #F27951

analogous

#51F2C9 #51CAF2 #5179F2

triadic

#51CAF2 #F251CA #CAF251

tetradic

#51CAF2 #C951F2 #F27951 #79F251

square

#51CAF2 #C951F2 #F27951 #79F251

split-complementary

#51CAF2 #F25179 #F2C951

monochromatic

#0E90BB #18B9EE #51CAF2 #8ADBF6 #C3EDFB

Accessibility & contrast

On white

1.90

#51CAF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.08

#51CAF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CAF2

11.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CAF2	#FFFFFF	#000000	##000000
##51CAF2	1.00	1.90	11.08	11.08
#FFFFFF	1.90	1.00	21.00	21.00
#000000	11.08	21.00	1.00	1.00
##000000	11.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B3C6F4

Deuteranopia (green-blind)

#9DB5F2

Tritanopia (blue-blind)

#00D6D7

Achromatopsia (no color)

#BCBCBC

Design tokens & code

CSS

--color: #51caf2;
/* rgb */ color: rgb(81, 202, 242);
/* oklch */ color: oklch(78.7% 0.120 223.5);

Tailwind

colors: {
  custom: {
    50: '#93daf6',
    500: '#51caf2',
    950: '#000000',
  },
}

SCSS

$custom: #51caf2;
$custom-light: #93daf6;
$custom-dark: #000000;

JSON

{
  "hex": "#51caf2",
  "rgb": {
    "r": 81,
    "g": 202,
    "b": 242
  },
  "hsl": {
    "h": 194.907,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.78698,
    "c": 0.12021,
    "h": 223.5
  },
  "luminance": 0.50401
}

Semantic roles & 50–950 ramp

primary

#51CAF2

secondary

#B9512E

accent

#3A03E3

background

#FCFEFF

surface

#F5FBFE

border

#CFD4D6

text

#0E1417

muted

#7F8385

Preview Lab

Preview with #51CAF2

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

Preview Lab → · Contrast checker → · Palette generator →