#51BB99#51BB99

#51BB99 is a light, moderate teal. Relative luminance 0.396; OKLCH L 72.0% C 0.111 H 169.2°. Best body text is #000000 at 8.92:1 contrast (WCAG AA passes).

Color values

HEX	#51BB99
RGB	rgb(81, 187, 153)
HSL	hsl(161, 44%, 53%)
HSV	hsv(161, 57%, 73%)
CMYK	cmyk(56.7%, 0%, 18.2%, 26.7%)
CIE-LAB	lab(69.17, -38.81, 8.10)
CIE-LCH	lch(69.17, 39.65, 168.20°)
OKLab	oklab(72.04% -0.1089 0.0207)
OKLCH	oklch(72.04% 0.111 169.2)
XYZ	xyz(26.9107, 39.5873, 36.3538)
Luminance	0.3959 (WCAG relative)
Temperature	neutral
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#51BB99 #BB5173

analogous

#51BB64 #51BB99 #51A8BB

triadic

#51BB99 #9951BB #BB9951

tetradic

#51BB99 #6451BB #BB5173 #A8BB51

square

#51BB99 #6451BB #BB5173 #A8BB51

split-complementary

#51BB99 #BB51A8 #BB6451

monochromatic

#296954 #3A9578 #51BB99 #7DCCB3 #A9DDCD

Accessibility & contrast

On white

2.35

#51BB99 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.92

#51BB99 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #51BB99

8.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##51BB99	#FFFFFF	#000000	##000000
##51BB99	1.00	2.35	8.92	8.92
#FFFFFF	2.35	1.00	21.00	21.00
#000000	8.92	21.00	1.00	1.00
##000000	8.92	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B6B097

Deuteranopia (green-blind)

#A7A49B

Tritanopia (blue-blind)

#16BCB1

Achromatopsia (no color)

#A9A9A9

Design tokens & code

CSS

--color: #51bb99;
/* rgb */ color: rgb(81, 187, 153);
/* oklch */ color: oklch(72.0% 0.111 169.2);

Tailwind

colors: {
  custom: {
    50: '#8bd0b7',
    500: '#51bb99',
    950: '#000000',
  },
}

SCSS

$custom: #51bb99;
$custom-light: #8bd0b7;
$custom-dark: #000000;

JSON

{
  "hex": "#51bb99",
  "rgb": {
    "r": 81,
    "g": 187,
    "b": 153
  },
  "hsl": {
    "h": 160.755,
    "s": 43.802,
    "l": 52.549
  },
  "oklch": {
    "l": 0.72039,
    "c": 0.11082,
    "h": 169.2
  },
  "luminance": 0.3959
}

Semantic roles & 50–950 ramp

primary

#51BB99

secondary

#CB9DAC

accent

#547DD4

background

#F9FCFB

surface

#F1F9F6

border

#CBD2D0

text

#0D1411

muted

#7E8280

Preview Lab

Preview with #51BB99

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

Preview Lab → · Contrast checker → · Palette generator →