#51CEF2#51CEF2

#51CEF2 is a light, moderate cyan. Relative luminance 0.523; OKLCH L 79.6% C 0.120 H 220.5°. Best body text is #000000 at 11.46:1 contrast (WCAG AA passes).

Color values

HEX	#51CEF2
RGB	rgb(81, 206, 242)
HSL	hsl(193, 86%, 63%)
HSV	hsv(193, 67%, 95%)
CMYK	cmyk(66.5%, 14.9%, 0%, 5.1%)
CIE-LAB	lab(77.46, -23.56, -27.87)
CIE-LCH	lch(77.46, 36.50, 229.78°)
OKLab	oklab(79.62% -0.0911 -0.0777)
OKLCH	oklch(79.62% 0.12 220.5)
XYZ	xyz(41.4851, 52.2982, 91.8954)
Luminance	0.5230 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CEF2 #F27551

analogous

#51F2C5 #51CEF2 #517DF2

triadic

#51CEF2 #F251CE #CEF251

tetradic

#51CEF2 #C551F2 #F27551 #7DF251

square

#51CEF2 #C551F2 #F27551 #7DF251

split-complementary

#51CEF2 #F2517D #F2C551

monochromatic

#0E94BB #18BEEE #51CEF2 #8ADEF6 #C3EEFB

Accessibility & contrast

On white

1.83

#51CEF2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.46

#51CEF2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CEF2

11.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CEF2	#FFFFFF	#000000	##000000
##51CEF2	1.00	1.83	11.46	11.46
#FFFFFF	1.83	1.00	21.00	21.00
#000000	11.46	21.00	1.00	1.00
##000000	11.46	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C9F4

Deuteranopia (green-blind)

#A2B8F2

Tritanopia (blue-blind)

#00DAD9

Achromatopsia (no color)

#BFBFBF

Design tokens & code

CSS

--color: #51cef2;
/* rgb */ color: rgb(81, 206, 242);
/* oklch */ color: oklch(79.6% 0.120 220.5);

Tailwind

colors: {
  custom: {
    50: '#93ddf6',
    500: '#51cef2',
    950: '#000000',
  },
}

SCSS

$custom: #51cef2;
$custom-light: #93ddf6;
$custom-dark: #000000;

JSON

{
  "hex": "#51cef2",
  "rgb": {
    "r": 81,
    "g": 206,
    "b": 242
  },
  "hsl": {
    "h": 193.416,
    "s": 86.096,
    "l": 63.333
  },
  "oklch": {
    "l": 0.79617,
    "c": 0.11979,
    "h": 220.5
  },
  "luminance": 0.52303
}

Semantic roles & 50–950 ramp

primary

#51CEF2

secondary

#B94D2E

accent

#3503E3

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51CEF2

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

Preview Lab → · Contrast checker → · Palette generator →