#51D0EC#51D0EC

#51D0EC is a light, moderate cyan. Relative luminance 0.529; OKLCH L 79.8% C 0.117 H 215.1°. Best body text is #000000 at 11.58:1 contrast (WCAG AA passes).

Color values

HEX	#51D0EC
RGB	rgb(81, 208, 236)
HSL	hsl(191, 80%, 62%)
HSV	hsv(191, 66%, 93%)
CMYK	cmyk(65.7%, 11.9%, 0%, 7.5%)
CIE-LAB	lab(77.82, -26.36, -24.10)
CIE-LCH	lch(77.82, 35.72, 222.43°)
OKLab	oklab(79.84% -0.0954 -0.067)
OKLCH	oklch(79.84% 0.117 215.1)
XYZ	xyz(41.0833, 52.9127, 87.3886)
Luminance	0.5292 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D0EC #EC6D51

analogous

#51ECBB #51D0EC #5182EC

triadic

#51D0EC #EC51D0 #D0EC51

tetradic

#51D0EC #BB51EC #EC6D51 #82EC51

square

#51D0EC #BB51EC #EC6D51 #82EC51

split-complementary

#51D0EC #EC5182 #ECBB51

monochromatic

#1393AF #1AC1E6 #51D0EC #88DFF2 #BFEEF8

Accessibility & contrast

On white

1.81

#51D0EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.58

#51D0EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D0EC

11.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D0EC	#FFFFFF	#000000	##000000
##51D0EC	1.00	1.81	11.58	11.58
#FFFFFF	1.81	1.00	21.00	21.00
#000000	11.58	21.00	1.00	1.00
##000000	11.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BCCAEE

Deuteranopia (green-blind)

#A6B9EC

Tritanopia (blue-blind)

#00DAD9

Achromatopsia (no color)

#C0C0C0

Design tokens & code

CSS

--color: #51d0ec;
/* rgb */ color: rgb(81, 208, 236);
/* oklch */ color: oklch(79.8% 0.117 215.1);

Tailwind

colors: {
  custom: {
    50: '#93def2',
    500: '#51d0ec',
    950: '#000000',
  },
}

SCSS

$custom: #51d0ec;
$custom-light: #93def2;
$custom-dark: #000000;

JSON

{
  "hex": "#51d0ec",
  "rgb": {
    "r": 81,
    "g": 208,
    "b": 236
  },
  "hsl": {
    "h": 190.839,
    "s": 80.311,
    "l": 62.157
  },
  "oklch": {
    "l": 0.7984,
    "c": 0.1166,
    "h": 215.1
  },
  "luminance": 0.52917
}

Semantic roles & 50–950 ramp

primary

#51D0EC

secondary

#B04831

accent

#2F09DD

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51D0EC

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

Preview Lab → · Contrast checker → · Palette generator →