#51D8EC#51D8EC

#51D8EC is a light, moderate teal. Relative luminance 0.569; OKLCH L 81.7% C 0.118 H 209.0°. Best body text is #000000 at 12.38:1 contrast (WCAG AA passes).

Color values

HEX	#51D8EC
RGB	rgb(81, 216, 236)
HSL	hsl(188, 80%, 62%)
HSV	hsv(188, 66%, 93%)
CMYK	cmyk(65.7%, 8.5%, 0%, 7.5%)
CIE-LAB	lab(80.13, -30.27, -20.59)
CIE-LCH	lch(80.13, 36.61, 214.23°)
OKLab	oklab(81.7% -0.1033 -0.0572)
OKLCH	oklch(81.7% 0.118 209)
XYZ	xyz(43.0831, 56.9124, 88.0552)
Luminance	0.5692 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D8EC #EC6551

analogous

#51ECB3 #51D8EC #518BEC

triadic

#51D8EC #EC51D8 #D8EC51

tetradic

#51D8EC #B351EC #EC6551 #8BEC51

square

#51D8EC #B351EC #EC6551 #8BEC51

split-complementary

#51D8EC #EC518B #ECB351

monochromatic

#139BAF #1ACCE6 #51D8EC #88E4F2 #BFF1F8

Accessibility & contrast

On white

1.70

#51D8EC on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.38

#51D8EC on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D8EC

12.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D8EC	#FFFFFF	#000000	##000000
##51D8EC	1.00	1.70	12.38	12.38
#FFFFFF	1.70	1.00	21.00	21.00
#000000	12.38	21.00	1.00	1.00
##000000	12.38	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C6D0ED

Deuteranopia (green-blind)

#AFC0EC

Tritanopia (blue-blind)

#00E1DE

Achromatopsia (no color)

#C7C7C7

Design tokens & code

CSS

--color: #51d8ec;
/* rgb */ color: rgb(81, 216, 236);
/* oklch */ color: oklch(81.7% 0.118 209.0);

Tailwind

colors: {
  custom: {
    50: '#94e4f2',
    500: '#51d8ec',
    950: '#000000',
  },
}

SCSS

$custom: #51d8ec;
$custom-light: #94e4f2;
$custom-dark: #000000;

JSON

{
  "hex": "#51d8ec",
  "rgb": {
    "r": 81,
    "g": 216,
    "b": 236
  },
  "hsl": {
    "h": 187.742,
    "s": 80.311,
    "l": 62.157
  },
  "oklch": {
    "l": 0.81697,
    "c": 0.1181,
    "h": 209
  },
  "luminance": 0.56917
}

Semantic roles & 50–950 ramp

primary

#51D8EC

secondary

#B04231

accent

#2409DD

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1516

muted

#808485

Preview Lab

Preview with #51D8EC

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

Preview Lab → · Contrast checker → · Palette generator →