#51D8DB#51D8DB

#51D8DB is a light, moderate teal. Relative luminance 0.560; OKLCH L 81.1% C 0.115 H 197.2°. Best body text is #000000 at 12.20:1 contrast (WCAG AA passes).

Color values

HEX	#51D8DB
RGB	rgb(81, 216, 219)
HSL	hsl(181, 66%, 59%)
HSV	hsv(181, 63%, 86%)
CMYK	cmyk(63%, 1.4%, 0%, 14.1%)
CIE-LAB	lab(79.60, -35.10, -12.32)
CIE-LCH	lch(79.60, 37.20, 199.35°)
OKLab	oklab(81.09% -0.1103 -0.0342)
OKLCH	oklch(81.09% 0.115 197.2)
XYZ	xyz(40.7298, 55.9711, 75.6611)
Luminance	0.5598 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D8DB #DB5451

analogous

#51DB99 #51D8DB #5193DB

triadic

#51D8DB #DB51D8 #D8DB51

tetradic

#51D8DB #9951DB #DB5451 #93DB51

square

#51D8DB #9951DB #DB5451 #93DB51

split-complementary

#51D8DB #DB5193 #DB9951

monochromatic

#1E9193 #29C2C6 #51D8DB #84E3E5 #B6EFF0

Accessibility & contrast

On white

1.72

#51D8DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.20

#51D8DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D8DB

12.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D8DB	#FFFFFF	#000000	##000000
##51D8DB	1.00	1.72	12.20	12.20
#FFFFFF	1.72	1.00	21.00	21.00
#000000	12.20	21.00	1.00	1.00
##000000	12.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CACEDB

Deuteranopia (green-blind)

#B5BFDC

Tritanopia (blue-blind)

#00DFD9

Achromatopsia (no color)

#C5C5C5

Design tokens & code

CSS

--color: #51d8db;
/* rgb */ color: rgb(81, 216, 219);
/* oklch */ color: oklch(81.1% 0.115 197.2);

Tailwind

colors: {
  custom: {
    50: '#92e4e6',
    500: '#51d8db',
    950: '#000000',
  },
}

SCSS

$custom: #51d8db;
$custom-light: #92e4e6;
$custom-dark: #000000;

JSON

{
  "hex": "#51d8db",
  "rgb": {
    "r": 81,
    "g": 216,
    "b": 219
  },
  "hsl": {
    "h": 181.304,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.81089,
    "c": 0.11545,
    "h": 197.2
  },
  "luminance": 0.55976
}

Semantic roles & 50–950 ramp

primary

#51D8DB

secondary

#983A38

accent

#433FE9

background

#FCFEFE

surface

#F5FCFC

border

#CFD5D5

text

#0E1515

muted

#7F8484

Preview Lab

Preview with #51D8DB

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

Preview Lab → · Contrast checker → · Palette generator →