#66C778#66C778

#66C778 is a light, vivid green. Relative luminance 0.450; OKLCH L 75.1% C 0.145 H 148.1°. Best body text is #000000 at 10.01:1 contrast (WCAG AA passes).

Color values

HEX	#66C778
RGB	rgb(102, 199, 120)
HSL	hsl(131, 46%, 59%)
HSV	hsv(131, 49%, 78%)
CMYK	cmyk(48.7%, 0%, 39.7%, 22%)
CIE-LAB	lab(72.91, -45.50, 30.96)
CIE-LCH	lch(72.91, 55.03, 145.76°)
OKLab	oklab(75.08% -0.1235 0.0768)
OKLCH	oklch(75.08% 0.145 148.1)
XYZ	xyz(29.2913, 45.0255, 24.9129)
Luminance	0.4503 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C778 #C766B5

analogous

#85C766 #66C778 #66C7A9

triadic

#66C778 #7866C7 #C77866

tetradic

#66C778 #6685C7 #C766B5 #C7A966

square

#66C778 #6685C7 #C766B5 #C7A966

split-complementary

#66C778 #A966C7 #C76685

monochromatic

#30833F #40B055 #66C778 #93D7A0 #C0E8C7

Accessibility & contrast

On white

2.10

#66C778 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.01

#66C778 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C778

10.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C778	#FFFFFF	#000000	##000000
##66C778	1.00	2.10	10.01	10.01
#FFFFFF	2.10	1.00	21.00	21.00
#000000	10.01	21.00	1.00	1.00
##000000	10.01	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C9B972

Deuteranopia (green-blind)

#BBAF7D

Tritanopia (blue-blind)

#54C4B3

Achromatopsia (no color)

#B3B3B3

Design tokens & code

CSS

--color: #66c778;
/* rgb */ color: rgb(102, 199, 120);
/* oklch */ color: oklch(75.1% 0.145 148.1);

Tailwind

colors: {
  custom: {
    50: '#98d9a0',
    500: '#66c778',
    950: '#000000',
  },
}

SCSS

$custom: #66c778;
$custom-light: #98d9a0;
$custom-dark: #000000;

JSON

{
  "hex": "#66c778",
  "rgb": {
    "r": 102,
    "g": 199,
    "b": 120
  },
  "hsl": {
    "h": 131.134,
    "s": 46.411,
    "l": 59.02
  },
  "oklch": {
    "l": 0.75077,
    "c": 0.14547,
    "h": 148.1
  },
  "luminance": 0.45028
}

Semantic roles & 50–950 ramp

primary

#66C778

secondary

#D7B1D0

accent

#52BED6

background

#F9FDF9

surface

#F2FAF2

border

#CCD3CC

text

#0E150E

muted

#7E837E

Preview Lab

Preview with #66C778

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

Preview Lab → · Contrast checker → · Palette generator →