#51D6EF#51D6EF

#51D6EF is a light, moderate teal. Relative luminance 0.561; OKLCH L 81.3% C 0.119 H 212.5°. Best body text is #000000 at 12.21:1 contrast (WCAG AA passes).

Color values

HEX	#51D6EF
RGB	rgb(81, 214, 239)
HSL	hsl(189, 83%, 63%)
HSV	hsv(189, 66%, 94%)
CMYK	cmyk(66.1%, 10.5%, 0%, 6.3%)
CIE-LAB	lab(79.65, -28.42, -22.92)
CIE-LCH	lch(79.65, 36.51, 218.88°)
OKLab	oklab(81.35% -0.1002 -0.0637)
OKLCH	oklch(81.35% 0.119 212.5)
XYZ	xyz(43.0134, 56.0697, 90.2003)
Luminance	0.5607 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D6EF #EF6A51

analogous

#51EFB9 #51D6EF #5187EF

triadic

#51D6EF #EF51D6 #D6EF51

tetradic

#51D6EF #B951EF #EF6A51 #87EF51

square

#51D6EF #B951EF #EF6A51 #87EF51

split-complementary

#51D6EF #EF5187 #EFB951

monochromatic

#119BB5 #19C9EA #51D6EF #89E3F4 #C1F0F9

Accessibility & contrast

On white

1.72

#51D6EF on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.21

#51D6EF on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D6EF

12.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D6EF	#FFFFFF	#000000	##000000
##51D6EF	1.00	1.72	12.21	12.21
#FFFFFF	1.72	1.00	21.00	21.00
#000000	12.21	21.00	1.00	1.00
##000000	12.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C3CFF0

Deuteranopia (green-blind)

#ACBEEF

Tritanopia (blue-blind)

#00E0DE

Achromatopsia (no color)

#C5C5C5

Design tokens & code

CSS

--color: #51d6ef;
/* rgb */ color: rgb(81, 214, 239);
/* oklch */ color: oklch(81.3% 0.119 212.5);

Tailwind

colors: {
  custom: {
    50: '#94e3f4',
    500: '#51d6ef',
    950: '#000000',
  },
}

SCSS

$custom: #51d6ef;
$custom-light: #94e3f4;
$custom-dark: #000000;

JSON

{
  "hex": "#51d6ef",
  "rgb": {
    "r": 81,
    "g": 214,
    "b": 239
  },
  "hsl": {
    "h": 189.494,
    "s": 83.158,
    "l": 62.745
  },
  "oklch": {
    "l": 0.81346,
    "c": 0.11872,
    "h": 212.5
  },
  "luminance": 0.56074
}

Semantic roles & 50–950 ramp

primary

#51D6EF

secondary

#B54530

accent

#2806E0

background

#FCFEFF

surface

#F5FCFE

border

#CFD5D6

text

#0F1517

muted

#808485

Preview Lab

Preview with #51D6EF

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

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