#51E5FC#51E5FC

#51E5FC is a very light, vivid teal. Relative luminance 0.648; OKLCH L 85.3% C 0.126 H 209.8°. Best body text is #000000 at 13.96:1 contrast (WCAG AA passes).

Color values

HEX	#51E5FC
RGB	rgb(81, 229, 252)
HSL	hsl(188, 97%, 65%)
HSV	hsv(188, 68%, 99%)
CMYK	cmyk(67.9%, 9.1%, 0%, 1.2%)
CIE-LAB	lab(84.39, -31.85, -22.62)
CIE-LCH	lch(84.39, 39.06, 215.38°)
OKLab	oklab(85.3% -0.1098 -0.0629)
OKLCH	oklch(85.3% 0.126 209.8)
XYZ	xyz(48.9758, 64.8106, 102.0051)
Luminance	0.6482 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E5FC #FC6851

analogous

#51FCBD #51E5FC #5190FC

triadic

#51E5FC #FC51E5 #E5FC51

tetradic

#51E5FC #BD51FC #FC6851 #90FC51

square

#51E5FC #BD51FC #FC6851 #90FC51

split-complementary

#51E5FC #FC5190 #FCBD51

monochromatic

#04B4CF #15DCFB #51E5FC #8DEEFD #C9F7FE

Accessibility & contrast

On white

1.50

#51E5FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.96

#51E5FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E5FC

13.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E5FC	#FFFFFF	#000000	##000000
##51E5FC	1.00	1.50	13.96	13.96
#FFFFFF	1.50	1.00	21.00	21.00
#000000	13.96	21.00	1.00	1.00
##000000	13.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D1DDFD

Deuteranopia (green-blind)

#B9CBFC

Tritanopia (blue-blind)

#00EFEC

Achromatopsia (no color)

#D3D3D3

Design tokens & code

CSS

--color: #51e5fc;
/* rgb */ color: rgb(81, 229, 252);
/* oklch */ color: oklch(85.3% 0.126 209.8);

Tailwind

colors: {
  custom: {
    50: '#96edfd',
    500: '#51e5fc',
    950: '#000000',
  },
}

SCSS

$custom: #51e5fc;
$custom-light: #96edfd;
$custom-dark: #000000;

JSON

{
  "hex": "#51e5fc",
  "rgb": {
    "r": 81,
    "g": 229,
    "b": 252
  },
  "hsl": {
    "h": 188.07,
    "s": 96.61,
    "l": 65.294
  },
  "oklch": {
    "l": 0.853,
    "c": 0.12649,
    "h": 209.8
  },
  "luminance": 0.64816
}

Semantic roles & 50–950 ramp

primary

#51E5FC

secondary

#CA3D27

accent

#1F00E6

background

#FCFFFF

surface

#F5FEFF

border

#CFD6D7

text

#0F1617

muted

#808585

Preview Lab

Preview with #51E5FC

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

Preview Lab → · Contrast checker → · Palette generator →