#51B7BB#51B7BB

#51B7BB is a light, moderate teal. Relative luminance 0.392; OKLCH L 72.1% C 0.094 H 198.8°. Best body text is #000000 at 8.84:1 contrast (WCAG AA passes).

Color values

HEX	#51B7BB
RGB	rgb(81, 183, 187)
HSL	hsl(182, 44%, 53%)
HSV	hsv(182, 57%, 73%)
CMYK	cmyk(56.7%, 2.1%, 0%, 26.7%)
CIE-LAB	lab(68.90, -28.20, -10.98)
CIE-LCH	lch(68.90, 30.26, 201.27°)
OKLab	oklab(72.12% -0.0892 -0.0304)
OKLCH	oklch(72.12% 0.094 198.8)
XYZ	xyz(29.2927, 39.2013, 53.0269)
Luminance	0.3920 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51B7BB #BB5551

analogous

#51BB8A #51B7BB #5182BB

triadic

#51B7BB #BB51B7 #B7BB51

tetradic

#51B7BB #8A51BB #BB5551 #82BB51

square

#51B7BB #8A51BB #BB5551 #82BB51

split-complementary

#51B7BB #BB5182 #BB8A51

monochromatic

#296669 #3A9195 #51B7BB #7DC9CC #A9DBDD

Accessibility & contrast

On white

2.38

#51B7BB on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.84

#51B7BB on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51B7BB

8.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51B7BB	#FFFFFF	#000000	##000000
##51B7BB	1.00	2.38	8.84	8.84
#FFFFFF	2.38	1.00	21.00	21.00
#000000	8.84	21.00	1.00	1.00
##000000	8.84	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#ABAFBB

Deuteranopia (green-blind)

#9AA3BC

Tritanopia (blue-blind)

#00BDB8

Achromatopsia (no color)

#A8A8A8

Design tokens & code

CSS

--color: #51b7bb;
/* rgb */ color: rgb(81, 183, 187);
/* oklch */ color: oklch(72.1% 0.094 198.8);

Tailwind

colors: {
  custom: {
    50: '#8ccdcf',
    500: '#51b7bb',
    950: '#000000',
  },
}

SCSS

$custom: #51b7bb;
$custom-light: #8ccdcf;
$custom-dark: #000000;

JSON

{
  "hex": "#51b7bb",
  "rgb": {
    "r": 81,
    "g": 183,
    "b": 187
  },
  "hsl": {
    "h": 182.264,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.72121,
    "c": 0.09425,
    "h": 198.8
  },
  "luminance": 0.39204
}

Semantic roles & 50–950 ramp

primary

#51B7BB

secondary

#CB9F9D

accent

#5954D4

background

#F9FCFC

surface

#F1F9F9

border

#CBD2D2

text

#0D1313

muted

#7E8282

Preview Lab

Preview with #51B7BB

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

Preview Lab → · Contrast checker → · Palette generator →