#51E2FF#51E2FF

#51E2FF is a very light, vivid cyan. Relative luminance 0.634; OKLCH L 84.7% C 0.127 H 213.7°. Best body text is #000000 at 13.67:1 contrast (WCAG AA passes).

Color values

HEX	#51E2FF
RGB	rgb(81, 226, 255)
HSL	hsl(190, 100%, 66%)
HSV	hsv(190, 68%, 100%)
CMYK	cmyk(68.2%, 11.4%, 0%, 0%)
CIE-LAB	lab(83.63, -29.53, -25.35)
CIE-LCH	lch(83.63, 38.91, 220.65°)
OKLab	oklab(84.72% -0.1057 -0.0706)
OKLCH	oklch(84.72% 0.127 213.7)
XYZ	xyz(48.6321, 63.3565, 104.2543)
Luminance	0.6336 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51E2FF #FF6E51

analogous

#51FFC5 #51E2FF #518BFF

triadic

#51E2FF #FF51E2 #E2FF51

tetradic

#51E2FF #C551FF #FF6E51 #8BFF51

square

#51E2FF #C551FF #FF6E51 #8BFF51

split-complementary

#51E2FF #FF518B #FFC551

monochromatic

#00B2D6 #14D8FF #51E2FF #8EECFF #CBF6FF

Accessibility & contrast

On white

1.54

#51E2FF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.67

#51E2FF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51E2FF

13.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51E2FF	#FFFFFF	#000000	##000000
##51E2FF	1.00	1.54	13.67	13.67
#FFFFFF	1.54	1.00	21.00	21.00
#000000	13.67	21.00	1.00	1.00
##000000	13.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CDDBFF

Deuteranopia (green-blind)

#B4C9FF

Tritanopia (blue-blind)

#00EDEB

Achromatopsia (no color)

#D0D0D0

Design tokens & code

CSS

--color: #51e2ff;
/* rgb */ color: rgb(81, 226, 255);
/* oklch */ color: oklch(84.7% 0.127 213.7);

Tailwind

colors: {
  custom: {
    50: '#96ebff',
    500: '#51e2ff',
    950: '#000000',
  },
}

SCSS

$custom: #51e2ff;
$custom-light: #96ebff;
$custom-dark: #000000;

JSON

{
  "hex": "#51e2ff",
  "rgb": {
    "r": 81,
    "g": 226,
    "b": 255
  },
  "hsl": {
    "h": 190,
    "s": 100,
    "l": 65.882
  },
  "oklch": {
    "l": 0.84724,
    "c": 0.1271,
    "h": 213.7
  },
  "luminance": 0.63362
}

Semantic roles & 50–950 ramp

primary

#51E2FF

secondary

#D04125

accent

#2600E6

background

#FCFEFF

surface

#F5FDFF

border

#CFD5D7

text

#0F1618

muted

#808486

Preview Lab

Preview with #51E2FF

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

Preview Lab → · Contrast checker → · Palette generator →