#51FFFF#51FFFF

#51FFFF is a very light, vivid teal. Relative luminance 0.805; OKLCH L 91.4% C 0.138 H 195.0°. Best body text is #000000 at 17.10:1 contrast (WCAG AA passes).

Color values

HEX	#51FFFF
RGB	rgb(81, 255, 255)
HSL	hsl(180, 100%, 66%)
HSV	hsv(180, 68%, 100%)
CMYK	cmyk(68.2%, 0%, 0%, 0%)
CIE-LAB	lab(91.90, -42.96, -12.87)
CIE-LCH	lch(91.90, 44.85, 196.68°)
OKLab	oklab(91.41% -0.1334 -0.0358)
OKLCH	oklch(91.41% 0.138 195)
XYZ	xyz(57.1952, 80.4827, 107.1087)
Luminance	0.8049 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51FFFF #FF5151

analogous

#51FFA8 #51FFFF #51A8FF

triadic

#51FFFF #FF51FF #FFFF51

tetradic

#51FFFF #A851FF #FF5151 #A8FF51

square

#51FFFF #A851FF #FF5151 #A8FF51

split-complementary

#51FFFF #FF51A8 #FFA851

monochromatic

#00D6D6 #14FFFF #51FFFF #8EFFFF #CBFFFF

Accessibility & contrast

On white

1.23

#51FFFF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

17.10

#51FFFF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51FFFF

17.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51FFFF	#FFFFFF	#000000	##000000
##51FFFF	1.00	1.23	17.10	17.10
#FFFFFF	1.23	1.00	21.00	21.00
#000000	17.10	21.00	1.00	1.00
##000000	17.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#EFF3FF

Deuteranopia (green-blind)

#D5E0FF

Tritanopia (blue-blind)

#00FFFF

Achromatopsia (no color)

#E8E8E8

Design tokens & code

CSS

--color: #51ffff;
/* rgb */ color: rgb(81, 255, 255);
/* oklch */ color: oklch(91.4% 0.138 195.0);

Tailwind

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

SCSS

$custom: #51ffff;
$custom-light: #99ffff;
$custom-dark: #000000;

JSON

{
  "hex": "#51ffff",
  "rgb": {
    "r": 81,
    "g": 255,
    "b": 255
  },
  "hsl": {
    "h": 180,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.91408,
    "c": 0.13814,
    "h": 195
  },
  "luminance": 0.80489
}

Semantic roles & 50–950 ramp

primary

#51FFFF

secondary

#D02525

accent

#0000E6

background

#FDFFFF

surface

#F7FFFF

border

#D0D7D7

text

#101818

muted

#818686

Preview Lab

Preview with #51FFFF

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

Preview Lab → · Contrast checker → · Palette generator →