#51BBB2#51BBB2

#51BBB2 is a light, moderate teal. Relative luminance 0.405; OKLCH L 72.8% C 0.098 H 187.6°. Best body text is #000000 at 9.10:1 contrast (WCAG AA passes).

Color values

HEX	#51BBB2
RGB	rgb(81, 187, 178)
HSL	hsl(175, 44%, 53%)
HSV	hsv(175, 57%, 73%)
CMYK	cmyk(56.7%, 0%, 4.8%, 26.7%)
CIE-LAB	lab(69.83, -32.57, -4.65)
CIE-LCH	lch(69.83, 32.90, 188.13°)
OKLab	oklab(72.78% -0.0975 -0.0131)
OKLCH	oklch(72.78% 0.098 187.6)
XYZ	xyz(29.1960, 40.5014, 48.3898)
Luminance	0.4050 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BBB2 #BB515A

analogous

#51BB7D #51BBB2 #518FBB

triadic

#51BBB2 #B251BB #BBB251

tetradic

#51BBB2 #7D51BB #BB515A #8FBB51

square

#51BBB2 #7D51BB #BB515A #8FBB51

split-complementary

#51BBB2 #BB518F #BB7D51

monochromatic

#296963 #3A958D #51BBB2 #7DCCC5 #A9DDD9

Accessibility & contrast

On white

2.31

#51BBB2 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.10

#51BBB2 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BBB2

9.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BBB2	#FFFFFF	#000000	##000000
##51BBB2	1.00	2.31	9.10	9.10
#FFFFFF	2.31	1.00	21.00	21.00
#000000	9.10	21.00	1.00	1.00
##000000	9.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B2B2B2

Deuteranopia (green-blind)

#A1A5B3

Tritanopia (blue-blind)

#00BFB8

Achromatopsia (no color)

#ABABAB

Design tokens & code

CSS

--color: #51bbb2;
/* rgb */ color: rgb(81, 187, 178);
/* oklch */ color: oklch(72.8% 0.098 187.6);

Tailwind

colors: {
  custom: {
    50: '#8cd0c9',
    500: '#51bbb2',
    950: '#000000',
  },
}

SCSS

$custom: #51bbb2;
$custom-light: #8cd0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#51bbb2",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 178
  },
  "hsl": {
    "h": 174.906,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.72783,
    "c": 0.09836,
    "h": 187.6
  },
  "luminance": 0.40504
}

Semantic roles & 50–950 ramp

primary

#51BBB2

secondary

#CB9DA1

accent

#545FD4

background

#F9FCFC

surface

#F1F9F8

border

#CBD2D1

text

#0D1413

muted

#7E8282

Preview Lab

Preview with #51BBB2

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

Preview Lab → · Contrast checker → · Palette generator →