#51D1EC#51D1EC

#51D1EC is a light, moderate cyan. Relative luminance 0.534; OKLCH L 80.1% C 0.117 H 214.3°. Best body text is #000000 at 11.68:1 contrast (WCAG AA passes).

Color values

HEX	#51D1EC
RGB	rgb(81, 209, 236)
HSL	hsl(190, 80%, 62%)
HSV	hsv(190, 66%, 93%)
CMYK	cmyk(65.7%, 11.4%, 0%, 7.5%)
CIE-LAB	lab(78.11, -26.86, -23.66)
CIE-LCH	lch(78.11, 35.79, 221.38°)
OKLab	oklab(80.07% -0.0964 -0.0658)
OKLCH	oklch(80.07% 0.117 214.3)
XYZ	xyz(41.3278, 53.4018, 87.4701)
Luminance	0.5341 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D1EC #EC6C51

analogous

#51ECBA #51D1EC #5183EC

triadic

#51D1EC #EC51D1 #D1EC51

tetradic

#51D1EC #BA51EC #EC6C51 #83EC51

square

#51D1EC #BA51EC #EC6C51 #83EC51

split-complementary

#51D1EC #EC5183 #ECBA51

monochromatic

#1394AF #1AC2E6 #51D1EC #88E0F2 #BFEEF8

Accessibility & contrast

On white

1.80

#51D1EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.68

#51D1EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D1EC

11.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D1EC	#FFFFFF	#000000	##000000
##51D1EC	1.00	1.80	11.68	11.68
#FFFFFF	1.80	1.00	21.00	21.00
#000000	11.68	21.00	1.00	1.00
##000000	11.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BDCBEE

Deuteranopia (green-blind)

#A7BAEC

Tritanopia (blue-blind)

#00DBD9

Achromatopsia (no color)

#C1C1C1

Design tokens & code

CSS

--color: #51d1ec;
/* rgb */ color: rgb(81, 209, 236);
/* oklch */ color: oklch(80.1% 0.117 214.3);

Tailwind

colors: {
  custom: {
    50: '#93dff2',
    500: '#51d1ec',
    950: '#000000',
  },
}

SCSS

$custom: #51d1ec;
$custom-light: #93dff2;
$custom-dark: #000000;

JSON

{
  "hex": "#51d1ec",
  "rgb": {
    "r": 81,
    "g": 209,
    "b": 236
  },
  "hsl": {
    "h": 190.452,
    "s": 80.311,
    "l": 62.157
  },
  "oklch": {
    "l": 0.80072,
    "c": 0.11671,
    "h": 214.3
  },
  "luminance": 0.53406
}

Semantic roles & 50–950 ramp

primary

#51D1EC

secondary

#B04731

accent

#2E09DD

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0E1516

muted

#7F8485

Preview Lab

Preview with #51D1EC

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

Preview Lab → · Contrast checker → · Palette generator →