#51E3FC#51E3FC

#51E3FC is a very light, vivid teal. Relative luminance 0.637; OKLCH L 84.8% C 0.126 H 211.2°. Best body text is #000000 at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#51E3FC
RGB	rgb(81, 227, 252)
HSL	hsl(189, 97%, 65%)
HSV	hsv(189, 68%, 99%)
CMYK	cmyk(67.9%, 9.9%, 0%, 1.2%)
CIE-LAB	lab(83.81, -30.89, -23.49)
CIE-LCH	lch(83.81, 38.80, 217.25°)
OKLab	oklab(84.84% -0.1078 -0.0653)
OKLCH	oklch(84.84% 0.126 211.2)
XYZ	xyz(48.4257, 63.7103, 101.8217)
Luminance	0.6372 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E3FC #FC6A51

analogous

#51FCBF #51E3FC #518DFC

triadic

#51E3FC #FC51E3 #E3FC51

tetradic

#51E3FC #BF51FC #FC6A51 #8DFC51

square

#51E3FC #BF51FC #FC6A51 #8DFC51

split-complementary

#51E3FC #FC518D #FCBF51

monochromatic

#04B1CF #15D9FB #51E3FC #8DEDFD #C9F6FE

Accessibility & contrast

On white

1.53

#51E3FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.74

#51E3FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E3FC

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E3FC	#FFFFFF	#000000	##000000
##51E3FC	1.00	1.53	13.74	13.74
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.74	21.00	1.00	1.00
##000000	13.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CFDBFE

Deuteranopia (green-blind)

#B6C9FC

Tritanopia (blue-blind)

#00EEEB

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #51e3fc;
/* rgb */ color: rgb(81, 227, 252);
/* oklch */ color: oklch(84.8% 0.126 211.2);

Tailwind

colors: {
  custom: {
    50: '#96ecfd',
    500: '#51e3fc',
    950: '#000000',
  },
}

SCSS

$custom: #51e3fc;
$custom-light: #96ecfd;
$custom-dark: #000000;

JSON

{
  "hex": "#51e3fc",
  "rgb": {
    "r": 81,
    "g": 227,
    "b": 252
  },
  "hsl": {
    "h": 188.772,
    "s": 96.61,
    "l": 65.294
  },
  "oklch": {
    "l": 0.8484,
    "c": 0.12606,
    "h": 211.2
  },
  "luminance": 0.63716
}

Semantic roles & 50–950 ramp

primary

#51E3FC

secondary

#CA3F27

accent

#2200E6

background

#FCFEFF

surface

#F5FDFF

border

#CFD5D7

text

#0F1617

muted

#808485

Preview Lab

Preview with #51E3FC

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

Preview Lab → · Contrast checker → · Palette generator →