#51E4FC#51E4FC

#51E4FC is a very light, vivid teal. Relative luminance 0.643; OKLCH L 85.1% C 0.126 H 210.5°. Best body text is #000000 at 13.85:1 contrast (WCAG AA passes).

Color values

HEX	#51E4FC
RGB	rgb(81, 228, 252)
HSL	hsl(188, 97%, 65%)
HSV	hsv(188, 68%, 99%)
CMYK	cmyk(67.9%, 9.5%, 0%, 1.2%)
CIE-LAB	lab(84.10, -31.37, -23.05)
CIE-LCH	lch(84.10, 38.93, 216.31°)
OKLab	oklab(85.07% -0.1088 -0.0641)
OKLCH	oklch(85.07% 0.126 210.5)
XYZ	xyz(48.7000, 64.2589, 101.9132)
Luminance	0.6426 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E4FC #FC6951

analogous

#51FCBE #51E4FC #518EFC

triadic

#51E4FC #FC51E4 #E4FC51

tetradic

#51E4FC #BE51FC #FC6951 #8EFC51

square

#51E4FC #BE51FC #FC6951 #8EFC51

split-complementary

#51E4FC #FC518E #FCBE51

monochromatic

#04B2CF #15DBFB #51E4FC #8DEDFD #C9F7FE

Accessibility & contrast

On white

1.52

#51E4FC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.85

#51E4FC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E4FC

13.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E4FC	#FFFFFF	#000000	##000000
##51E4FC	1.00	1.52	13.85	13.85
#FFFFFF	1.52	1.00	21.00	21.00
#000000	13.85	21.00	1.00	1.00
##000000	13.85	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0DCFD

Deuteranopia (green-blind)

#B7CAFC

Tritanopia (blue-blind)

#00EFEB

Achromatopsia (no color)

#D2D2D2

Design tokens & code

CSS

--color: #51e4fc;
/* rgb */ color: rgb(81, 228, 252);
/* oklch */ color: oklch(85.1% 0.126 210.5);

Tailwind

colors: {
  custom: {
    50: '#96edfd',
    500: '#51e4fc',
    950: '#000000',
  },
}

SCSS

$custom: #51e4fc;
$custom-light: #96edfd;
$custom-dark: #000000;

JSON

{
  "hex": "#51e4fc",
  "rgb": {
    "r": 81,
    "g": 228,
    "b": 252
  },
  "hsl": {
    "h": 188.421,
    "s": 96.61,
    "l": 65.294
  },
  "oklch": {
    "l": 0.8507,
    "c": 0.12626,
    "h": 210.5
  },
  "luminance": 0.64264
}

Semantic roles & 50–950 ramp

primary

#51E4FC

secondary

#CA3E27

accent

#2000E6

background

#FCFFFF

surface

#F5FEFF

border

#CFD6D7

text

#0F1617

muted

#808585

Preview Lab

Preview with #51E4FC

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

Preview Lab → · Contrast checker → · Palette generator →