#66EF5F#66EF5F

#66EF5F is a very light, highly saturated green. Relative luminance 0.654; OKLCH L 84.6% C 0.220 H 142.5°. Best body text is #000000 at 14.08:1 contrast (WCAG AA passes).

Color values

HEX	#66EF5F
RGB	rgb(102, 239, 95)
HSL	hsl(117, 82%, 65%)
HSV	hsv(117, 60%, 94%)
CMYK	cmyk(57.3%, 0%, 60.3%, 6.3%)
CIE-LAB	lab(84.68, -64.30, 57.27)
CIE-LCH	lch(84.68, 86.11, 138.31°)
OKLab	oklab(84.64% -0.175 0.1341)
OKLCH	oklch(84.64% 0.22 142.5)
XYZ	xyz(38.4095, 65.3806, 21.4199)
Luminance	0.6538 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EF5F #E85FEF

analogous

#AEEF5F #66EF5F #5FEFA0

triadic

#66EF5F #5F66EF #EF5F66

tetradic

#66EF5F #5FAEEF #E85FEF #EFA05F

square

#66EF5F #5FAEEF #E85FEF #EFA05F

split-complementary

#66EF5F #A05FEF #EF5FAE

monochromatic

#1CC013 #31E927 #66EF5F #9BF597 #D0FACE

Accessibility & contrast

On white

1.49

#66EF5F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

14.08

#66EF5F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EF5F

14.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EF5F	#FFFFFF	#000000	##000000
##66EF5F	1.00	1.49	14.08	14.08
#FFFFFF	1.49	1.00	21.00	21.00
#000000	14.08	21.00	1.00	1.00
##000000	14.08	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F4DB4F

Deuteranopia (green-blind)

#E3CF6B

Tritanopia (blue-blind)

#50E8D0

Achromatopsia (no color)

#D3D3D3

Design tokens & code

CSS

--color: #66ef5f;
/* rgb */ color: rgb(102, 239, 95);
/* oklch */ color: oklch(84.6% 0.220 142.5);

Tailwind

colors: {
  custom: {
    50: '#9ef591',
    500: '#66ef5f',
    950: '#000000',
  },
}

SCSS

$custom: #66ef5f;
$custom-light: #9ef591;
$custom-dark: #000000;

JSON

{
  "hex": "#66ef5f",
  "rgb": {
    "r": 102,
    "g": 239,
    "b": 95
  },
  "hsl": {
    "h": 117.083,
    "s": 81.818,
    "l": 65.49
  },
  "oklch": {
    "l": 0.84644,
    "c": 0.22049,
    "h": 142.5
  },
  "luminance": 0.65384
}

Semantic roles & 50–950 ramp

primary

#66EF5F

secondary

#B834BE

accent

#07DED4

background

#FCFFFC

surface

#F6FFF4

border

#D0D7CE

text

#10170D

muted

#80857F

Preview Lab

Preview with #66EF5F

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

Preview Lab → · Contrast checker → · Palette generator →