#51D9DB#51D9DB

#51D9DB is a light, moderate teal. Relative luminance 0.565; OKLCH L 81.3% C 0.116 H 196.5°. Best body text is #000000 at 12.30:1 contrast (WCAG AA passes).

Color values

HEX	#51D9DB
RGB	rgb(81, 217, 219)
HSL	hsl(181, 66%, 59%)
HSV	hsv(181, 63%, 86%)
CMYK	cmyk(63%, 0.9%, 0%, 14.1%)
CIE-LAB	lab(79.89, -35.56, -11.89)
CIE-LCH	lch(79.89, 37.50, 198.48°)
OKLab	oklab(81.33% -0.1113 -0.033)
OKLCH	oklch(81.33% 0.116 196.5)
XYZ	xyz(40.9868, 56.4850, 75.7467)
Luminance	0.5649 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51D9DB #DB5351

analogous

#51DB98 #51D9DB #5194DB

triadic

#51D9DB #DB51D9 #D9DB51

tetradic

#51D9DB #9851DB #DB5351 #94DB51

square

#51D9DB #9851DB #DB5351 #94DB51

split-complementary

#51D9DB #DB5194 #DB9851

monochromatic

#1E9193 #29C4C6 #51D9DB #84E4E5 #B6EFF0

Accessibility & contrast

On white

1.71

#51D9DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.30

#51D9DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51D9DB

12.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51D9DB	#FFFFFF	#000000	##000000
##51D9DB	1.00	1.71	12.30	12.30
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.30	21.00	1.00	1.00
##000000	12.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CBCFDB

Deuteranopia (green-blind)

#B6BFDC

Tritanopia (blue-blind)

#00E0D9

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #51d9db;
/* rgb */ color: rgb(81, 217, 219);
/* oklch */ color: oklch(81.3% 0.116 196.5);

Tailwind

colors: {
  custom: {
    50: '#92e5e6',
    500: '#51d9db',
    950: '#000000',
  },
}

SCSS

$custom: #51d9db;
$custom-light: #92e5e6;
$custom-dark: #000000;

JSON

{
  "hex": "#51d9db",
  "rgb": {
    "r": 81,
    "g": 217,
    "b": 219
  },
  "hsl": {
    "h": 180.87,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.81326,
    "c": 0.11607,
    "h": 196.5
  },
  "luminance": 0.5649
}

Semantic roles & 50–950 ramp

primary

#51D9DB

secondary

#983A38

accent

#423FE9

background

#FCFEFE

surface

#F5FCFC

border

#CFD5D5

text

#0E1615

muted

#7F8484

Preview Lab

Preview with #51D9DB

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

Preview Lab → · Contrast checker → · Palette generator →