#51E4FF#51E4FF

#51E4FF is a very light, vivid teal. Relative luminance 0.645; OKLCH L 85.2% C 0.127 H 212.3°. Best body text is #000000 at 13.89:1 contrast (WCAG AA passes).

Color values

HEX	#51E4FF
RGB	rgb(81, 228, 255)
HSL	hsl(189, 100%, 66%)
HSV	hsv(189, 68%, 100%)
CMYK	cmyk(68.2%, 10.6%, 0%, 0%)
CIE-LAB	lab(84.20, -30.49, -24.48)
CIE-LCH	lch(84.20, 39.10, 218.76°)
OKLab	oklab(85.18% -0.1076 -0.0681)
OKLCH	oklch(85.18% 0.127 212.3)
XYZ	xyz(49.1791, 64.4505, 104.4367)
Luminance	0.6446 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E4FF #FF6C51

analogous

#51FFC3 #51E4FF #518DFF

triadic

#51E4FF #FF51E4 #E4FF51

tetradic

#51E4FF #C351FF #FF6C51 #8DFF51

square

#51E4FF #C351FF #FF6C51 #8DFF51

split-complementary

#51E4FF #FF518D #FFC351

monochromatic

#00B4D6 #14DBFF #51E4FF #8EEDFF #CBF7FF

Accessibility & contrast

On white

1.51

#51E4FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.89

#51E4FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E4FF

13.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E4FF	#FFFFFF	#000000	##000000
##51E4FF	1.00	1.51	13.89	13.89
#FFFFFF	1.51	1.00	21.00	21.00
#000000	13.89	21.00	1.00	1.00
##000000	13.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CFDCFF

Deuteranopia (green-blind)

#B6CAFF

Tritanopia (blue-blind)

#00EFEC

Achromatopsia (no color)

#D2D2D2

Design tokens & code

CSS

--color: #51e4ff;
/* rgb */ color: rgb(81, 228, 255);
/* oklch */ color: oklch(85.2% 0.127 212.3);

Tailwind

colors: {
  custom: {
    50: '#97edff',
    500: '#51e4ff',
    950: '#000000',
  },
}

SCSS

$custom: #51e4ff;
$custom-light: #97edff;
$custom-dark: #000000;

JSON

{
  "hex": "#51e4ff",
  "rgb": {
    "r": 81,
    "g": 228,
    "b": 255
  },
  "hsl": {
    "h": 189.31,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.85183,
    "c": 0.12737,
    "h": 212.3
  },
  "luminance": 0.64456
}

Semantic roles & 50–950 ramp

primary

#51E4FF

secondary

#D03F25

accent

#2400E6

background

#FCFEFF

surface

#F6FDFF

border

#D0D5D7

text

#0F1618

muted

#808486

Preview Lab

Preview with #51E4FF

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

Preview Lab → · Contrast checker → · Palette generator →