#51CEF6#51CEF6

#51CEF6 is a light, vivid cyan. Relative luminance 0.525; OKLCH L 79.8% C 0.122 H 222.9°. Best body text is #000000 at 11.51:1 contrast (WCAG AA passes).

Color values

HEX	#51CEF6
RGB	rgb(81, 206, 246)
HSL	hsl(195, 90%, 64%)
HSV	hsv(195, 67%, 96%)
CMYK	cmyk(67.1%, 16.3%, 0%, 3.5%)
CIE-LAB	lab(77.60, -22.35, -29.79)
CIE-LCH	lch(77.60, 37.24, 233.13°)
OKLab	oklab(79.78% -0.0897 -0.0832)
OKLCH	oklch(79.78% 0.122 222.9)
XYZ	xyz(42.0924, 52.5411, 95.0940)
Luminance	0.5255 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51CEF6 #F67951

analogous

#51F6CB #51CEF6 #517CF6

triadic

#51CEF6 #F651CE #CEF651

tetradic

#51CEF6 #CB51F6 #F67951 #7CF651

square

#51CEF6 #CB51F6 #F67951 #7CF651

split-complementary

#51CEF6 #F6517C #F6CB51

monochromatic

#0A96C3 #17BEF3 #51CEF6 #8BDEF9 #C5EFFC

Accessibility & contrast

On white

1.82

#51CEF6 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.51

#51CEF6 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51CEF6

11.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51CEF6	#FFFFFF	#000000	##000000
##51CEF6	1.00	1.82	11.51	11.51
#FFFFFF	1.82	1.00	21.00	21.00
#000000	11.51	21.00	1.00	1.00
##000000	11.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7C9F8

Deuteranopia (green-blind)

#A0B8F6

Tritanopia (blue-blind)

#00DADB

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #51cef6;
/* rgb */ color: rgb(81, 206, 246);
/* oklch */ color: oklch(79.8% 0.122 222.9);

Tailwind

colors: {
  custom: {
    50: '#94ddf9',
    500: '#51cef6',
    950: '#000000',
  },
}

SCSS

$custom: #51cef6;
$custom-light: #94ddf9;
$custom-dark: #000000;

JSON

{
  "hex": "#51cef6",
  "rgb": {
    "r": 81,
    "g": 206,
    "b": 246
  },
  "hsl": {
    "h": 194.545,
    "s": 90.164,
    "l": 64.118
  },
  "oklch": {
    "l": 0.79781,
    "c": 0.12231,
    "h": 222.9
  },
  "luminance": 0.52546
}

Semantic roles & 50–950 ramp

primary

#51CEF6

secondary

#C04F2B

accent

#3800E6

background

#FCFEFF

surface

#F5FCFF

border

#CFD5D7

text

#0F1517

muted

#808485

Preview Lab

Preview with #51CEF6

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

Preview Lab → · Contrast checker → · Palette generator →