#51D6F4#51D6F4

#51D6F4 is a light, vivid cyan. Relative luminance 0.564; OKLCH L 81.5% C 0.121 H 215.7°. Best body text is #000000 at 12.27:1 contrast (WCAG AA passes).

Color values

HEX	#51D6F4
RGB	rgb(81, 214, 244)
HSL	hsl(191, 88%, 64%)
HSV	hsv(191, 67%, 96%)
CMYK	cmyk(66.8%, 12.3%, 0%, 4.3%)
CIE-LAB	lab(79.82, -26.94, -25.32)
CIE-LCH	lch(79.82, 36.97, 223.23°)
OKLab	oklab(81.54% -0.0983 -0.0705)
OKLCH	oklch(81.54% 0.121 215.7)
XYZ	xyz(43.7622, 56.3692, 94.1444)
Luminance	0.5637 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D6F4 #F46F51

analogous

#51F4C0 #51D6F4 #5184F4

triadic

#51D6F4 #F451D6 #D6F451

tetradic

#51D6F4 #C051F4 #F46F51 #84F451

square

#51D6F4 #C051F4 #F46F51 #84F451

split-complementary

#51D6F4 #F45184 #F4C051

monochromatic

#0C9EBF #17C8F0 #51D6F4 #8BE4F8 #C4F1FB

Accessibility & contrast

On white

1.71

#51D6F4 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.27

#51D6F4 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D6F4

12.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D6F4	#FFFFFF	#000000	##000000
##51D6F4	1.00	1.71	12.27	12.27
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.27	21.00	1.00	1.00
##000000	12.27	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C1D0F6

Deuteranopia (green-blind)

#AABFF4

Tritanopia (blue-blind)

#00E1DF

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #51d6f4;
/* rgb */ color: rgb(81, 214, 244);
/* oklch */ color: oklch(81.5% 0.121 215.7);

Tailwind

colors: {
  custom: {
    50: '#94e3f7',
    500: '#51d6f4',
    950: '#000000',
  },
}

SCSS

$custom: #51d6f4;
$custom-light: #94e3f7;
$custom-dark: #000000;

JSON

{
  "hex": "#51d6f4",
  "rgb": {
    "r": 81,
    "g": 214,
    "b": 244
  },
  "hsl": {
    "h": 191.043,
    "s": 88.108,
    "l": 63.725
  },
  "oklch": {
    "l": 0.81539,
    "c": 0.12094,
    "h": 215.7
  },
  "luminance": 0.56374
}

Semantic roles & 50–950 ramp

primary

#51D6F4

secondary

#BD472D

accent

#2B01E5

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51D6F4

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

Preview Lab → · Contrast checker → · Palette generator →