#51FBFF#51FBFF

#51FBFF is a very light, vivid teal. Relative luminance 0.780; OKLCH L 90.5% C 0.136 H 197.3°. Best body text is #000000 at 16.59:1 contrast (WCAG AA passes).

Color values

HEX	#51FBFF
RGB	rgb(81, 251, 255)
HSL	hsl(181, 100%, 66%)
HSV	hsv(181, 68%, 100%)
CMYK	cmyk(68.2%, 1.6%, 0%, 0%)
CIE-LAB	lab(90.76, -41.18, -14.58)
CIE-LCH	lch(90.76, 43.68, 199.49°)
OKLab	oklab(90.48% -0.1296 -0.0405)
OKLCH	oklch(90.48% 0.136 197.3)
XYZ	xyz(55.9324, 77.9572, 106.6878)
Luminance	0.7796 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51FBFF #FF5551

analogous

#51FFAC #51FBFF #51A4FF

triadic

#51FBFF #FF51FB #FBFF51

tetradic

#51FBFF #AC51FF #FF5551 #A4FF51

square

#51FBFF #AC51FF #FF5551 #A4FF51

split-complementary

#51FBFF #FF51A4 #FFAC51

monochromatic

#00D1D6 #14FAFF #51FBFF #8EFCFF #CBFEFF

Accessibility & contrast

On white

1.27

#51FBFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

16.59

#51FBFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51FBFF

16.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51FBFF	#FFFFFF	#000000	##000000
##51FBFF	1.00	1.27	16.59	16.59
#FFFFFF	1.27	1.00	21.00	21.00
#000000	16.59	21.00	1.00	1.00
##000000	16.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EAEFFF

Deuteranopia (green-blind)

#D0DCFF

Tritanopia (blue-blind)

#00FFFC

Achromatopsia (no color)

#E4E4E4

Design tokens & code

CSS

--color: #51fbff;
/* rgb */ color: rgb(81, 251, 255);
/* oklch */ color: oklch(90.5% 0.136 197.3);

Tailwind

colors: {
  custom: {
    50: '#99fdff',
    500: '#51fbff',
    950: '#000000',
  },
}

SCSS

$custom: #51fbff;
$custom-light: #99fdff;
$custom-dark: #000000;

JSON

{
  "hex": "#51fbff",
  "rgb": {
    "r": 81,
    "g": 251,
    "b": 255
  },
  "hsl": {
    "h": 181.379,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.90484,
    "c": 0.1358,
    "h": 197.3
  },
  "luminance": 0.77964
}

Semantic roles & 50–950 ramp

primary

#51FBFF

secondary

#D02925

accent

#0500E6

background

#FCFFFF

surface

#F6FFFF

border

#D0D7D7

text

#101818

muted

#808686

Preview Lab

Preview with #51FBFF

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

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