#51C9DB#51C9DB

#51C9DB is a light, moderate teal. Relative luminance 0.486; OKLCH L 77.6% C 0.109 H 208.9°. Best body text is #000000 at 10.73:1 contrast (WCAG AA passes).

Color values

HEX	#51C9DB
RGB	rgb(81, 201, 219)
HSL	hsl(188, 66%, 59%)
HSV	hsv(188, 63%, 86%)
CMYK	cmyk(63%, 8.2%, 0%, 14.1%)
CIE-LAB	lab(75.22, -27.92, -18.91)
CIE-LCH	lch(75.22, 33.72, 214.11°)
OKLab	oklab(77.56% -0.095 -0.0524)
OKLCH	oklch(77.56% 0.109 208.9)
XYZ	xyz(37.0608, 48.6331, 74.4381)
Luminance	0.4864 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51C9DB #DB6351

analogous

#51DBA8 #51C9DB #5184DB

triadic

#51C9DB #DB51C9 #C9DB51

tetradic

#51C9DB #A851DB #DB6351 #84DB51

square

#51C9DB #A851DB #DB6351 #84DB51

split-complementary

#51C9DB #DB5184 #DBA851

monochromatic

#1E8493 #29B1C6 #51C9DB #84D9E5 #B6E8F0

Accessibility & contrast

On white

1.96

#51C9DB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.73

#51C9DB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51C9DB

10.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51C9DB	#FFFFFF	#000000	##000000
##51C9DB	1.00	1.96	10.73	10.73
#FFFFFF	1.96	1.00	21.00	21.00
#000000	10.73	21.00	1.00	1.00
##000000	10.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B8C2DC

Deuteranopia (green-blind)

#A4B3DB

Tritanopia (blue-blind)

#00D2CE

Achromatopsia (no color)

#B9B9B9

Design tokens & code

CSS

--color: #51c9db;
/* rgb */ color: rgb(81, 201, 219);
/* oklch */ color: oklch(77.6% 0.109 208.9);

Tailwind

colors: {
  custom: {
    50: '#91d9e6',
    500: '#51c9db',
    950: '#000000',
  },
}

SCSS

$custom: #51c9db;
$custom-light: #91d9e6;
$custom-dark: #000000;

JSON

{
  "hex": "#51c9db",
  "rgb": {
    "r": 81,
    "g": 201,
    "b": 219
  },
  "hsl": {
    "h": 187.826,
    "s": 65.714,
    "l": 58.824
  },
  "oklch": {
    "l": 0.77558,
    "c": 0.10853,
    "h": 208.9
  },
  "luminance": 0.48637
}

Semantic roles & 50–950 ramp

primary

#51C9DB

secondary

#DFB0A9

accent

#553FE9

background

#F9FDFE

surface

#F2FAFC

border

#CCD3D5

text

#0E1415

muted

#7E8384

Preview Lab

Preview with #51C9DB

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

Preview Lab → · Contrast checker → · Palette generator →