#66EC5F#66EC5F

#66EC5F is a very light, highly saturated green. Relative luminance 0.636; OKLCH L 83.9% C 0.217 H 142.5°. Best body text is #000000 at 13.73:1 contrast (WCAG AA passes).

Color values

HEX	#66EC5F
RGB	rgb(102, 236, 95)
HSL	hsl(117, 79%, 65%)
HSV	hsv(117, 60%, 93%)
CMYK	cmyk(56.8%, 0%, 59.7%, 7.5%)
CIE-LAB	lab(83.78, -63.23, 56.24)
CIE-LCH	lch(83.78, 84.62, 138.35°)
OKLab	oklab(83.9% -0.1721 0.1319)
OKLCH	oklch(83.9% 0.217 142.5)
XYZ	xyz(37.5385, 63.6386, 21.1295)
Luminance	0.6364 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EC5F #E55FEC

analogous

#ADEC5F #66EC5F #5FEC9E

triadic

#66EC5F #5F66EC #EC5F66

tetradic

#66EC5F #5FADEC #E55FEC #EC9E5F

square

#66EC5F #5FADEC #E55FEC #EC9E5F

split-complementary

#66EC5F #9E5FEC #EC5FAD

monochromatic

#1EBA16 #32E628 #66EC5F #9AF296 #CFF9CC

Accessibility & contrast

On white

1.53

#66EC5F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.73

#66EC5F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EC5F

13.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EC5F	#FFFFFF	#000000	##000000
##66EC5F	1.00	1.53	13.73	13.73
#FFFFFF	1.53	1.00	21.00	21.00
#000000	13.73	21.00	1.00	1.00
##000000	13.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F1D850

Deuteranopia (green-blind)

#E0CC6A

Tritanopia (blue-blind)

#51E5CE

Achromatopsia (no color)

#D1D1D1

Design tokens & code

CSS

--color: #66ec5f;
/* rgb */ color: rgb(102, 236, 95);
/* oklch */ color: oklch(83.9% 0.217 142.5);

Tailwind

colors: {
  custom: {
    50: '#9ef391',
    500: '#66ec5f',
    950: '#000000',
  },
}

SCSS

$custom: #66ec5f;
$custom-light: #9ef391;
$custom-dark: #000000;

JSON

{
  "hex": "#66ec5f",
  "rgb": {
    "r": 102,
    "g": 236,
    "b": 95
  },
  "hsl": {
    "h": 117.021,
    "s": 78.771,
    "l": 64.902
  },
  "oklch": {
    "l": 0.839,
    "c": 0.21684,
    "h": 142.5
  },
  "luminance": 0.63642
}

Semantic roles & 50–950 ramp

primary

#66EC5F

secondary

#B336BA

accent

#0ADBD1

background

#FCFFFC

surface

#F6FEF4

border

#D0D6CE

text

#10170D

muted

#80857F

Preview Lab

Preview with #66EC5F

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

Preview Lab → · Contrast checker → · Palette generator →