#51B1BB#51B1BB

#51B1BB is a light, moderate teal. Relative luminance 0.368; OKLCH L 70.7% C 0.091 H 204.6°. Best body text is #000000 at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#51B1BB
RGB	rgb(81, 177, 187)
HSL	hsl(186, 44%, 53%)
HSV	hsv(186, 57%, 73%)
CMYK	cmyk(56.7%, 5.3%, 0%, 26.7%)
CIE-LAB	lab(67.11, -25.22, -13.66)
CIE-LCH	lch(67.11, 28.68, 208.44°)
OKLab	oklab(70.68% -0.0827 -0.0378)
OKLCH	oklch(70.68% 0.091 204.6)
XYZ	xyz(28.0814, 36.7787, 52.6232)
Luminance	0.3678 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B1BB #BB5B51

analogous

#51BB90 #51B1BB #517CBB

triadic

#51B1BB #BB51B1 #B1BB51

tetradic

#51B1BB #9051BB #BB5B51 #7CBB51

square

#51B1BB #9051BB #BB5B51 #7CBB51

split-complementary

#51B1BB #BB517C #BB9051

monochromatic

#296369 #3A8C95 #51B1BB #7DC5CC #A9D8DD

Accessibility & contrast

On white

2.51

#51B1BB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.36

#51B1BB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B1BB

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B1BB	#FFFFFF	#000000	##000000
##51B1BB	1.00	2.51	8.36	8.36
#FFFFFF	2.51	1.00	21.00	21.00
#000000	8.36	21.00	1.00	1.00
##000000	8.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#A4AABC

Deuteranopia (green-blind)

#949EBB

Tritanopia (blue-blind)

#00B7B4

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #51b1bb;
/* rgb */ color: rgb(81, 177, 187);
/* oklch */ color: oklch(70.7% 0.091 204.6);

Tailwind

colors: {
  custom: {
    50: '#8cc8cf',
    500: '#51b1bb',
    950: '#000000',
  },
}

SCSS

$custom: #51b1bb;
$custom-light: #8cc8cf;
$custom-dark: #000000;

JSON

{
  "hex": "#51b1bb",
  "rgb": {
    "r": 81,
    "g": 177,
    "b": 187
  },
  "hsl": {
    "h": 185.66,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.70682,
    "c": 0.09088,
    "h": 204.6
  },
  "luminance": 0.36781
}

Semantic roles & 50–950 ramp

primary

#51B1BB

secondary

#CBA19D

accent

#6054D4

background

#F9FCFC

surface

#F1F8F9

border

#CBD1D2

text

#0D1313

muted

#7E8282

Preview Lab

Preview with #51B1BB

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

Preview Lab → · Contrast checker → · Palette generator →