#66BB3F#66BB3F

#66BB3F is a light, vivid green. Relative luminance 0.387; OKLCH L 71.3% C 0.179 H 137.4°. Best body text is #000000 at 8.74:1 contrast (WCAG AA passes).

Color values

HEX	#66BB3F
RGB	rgb(102, 187, 63)
HSL	hsl(101, 50%, 49%)
HSV	hsv(101, 66%, 73%)
CMYK	cmyk(45.5%, 0%, 66.3%, 26.7%)
CIE-LAB	lab(68.55, -47.77, 52.90)
CIE-LCH	lch(68.55, 71.28, 132.08°)
OKLab	oklab(71.29% -0.1321 0.1215)
OKLCH	oklch(71.29% 0.179 137.4)
XYZ	xyz(24.1463, 38.7228, 10.9036)
Luminance	0.3872 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BB3F #943FBB

analogous

#A4BB3F #66BB3F #3FBB56

triadic

#66BB3F #3F66BB #BB3F66

tetradic

#66BB3F #3FA4BB #943FBB #BB563F

square

#66BB3F #3FA4BB #943FBB #BB563F

split-complementary

#66BB3F #563FBB #BB3FA4

monochromatic

#345F20 #4D8D30 #66BB3F #89CD6A #AEDC98

Accessibility & contrast

On white

2.40

#66BB3F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.74

#66BB3F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BB3F

8.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BB3F	#FFFFFF	#000000	##000000
##66BB3F	1.00	2.40	8.74	8.74
#FFFFFF	2.40	1.00	21.00	21.00
#000000	8.74	21.00	1.00	1.00
##000000	8.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C1AC2E

Deuteranopia (green-blind)

#B6A54A

Tritanopia (blue-blind)

#61B5A2

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66bb3f;
/* rgb */ color: rgb(102, 187, 63);
/* oklch */ color: oklch(71.3% 0.179 137.4);

Tailwind

colors: {
  custom: {
    50: '#98d07a',
    500: '#66bb3f',
    950: '#000000',
  },
}

SCSS

$custom: #66bb3f;
$custom-light: #98d07a;
$custom-dark: #000000;

JSON

{
  "hex": "#66bb3f",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 63
  },
  "hsl": {
    "h": 101.129,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.71285,
    "c": 0.17945,
    "h": 137.4
  },
  "luminance": 0.38724
}

Semantic roles & 50–950 ramp

primary

#66BB3F

secondary

#B68EC8

accent

#4FD9AE

background

#F9FCF7

surface

#F2F9EE

border

#CCD2C9

text

#0E140A

muted

#7E827C

Preview Lab

Preview with #66BB3F

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

Preview Lab → · Contrast checker → · Palette generator →