#66EA3B#66EA3B

#66EA3B is a very light, highly saturated green. Relative luminance 0.620; OKLCH L 83.1% C 0.238 H 139.4°. Best body text is #000000 at 13.40:1 contrast (WCAG AA passes).

Color values

HEX	#66EA3B
RGB	rgb(102, 234, 59)
HSL	hsl(105, 81%, 57%)
HSV	hsv(105, 75%, 92%)
CMYK	cmyk(56.4%, 0%, 74.8%, 8.2%)
CIE-LAB	lab(82.90, -65.59, 69.05)
CIE-LCH	lch(82.90, 95.24, 133.53°)
OKLab	oklab(83.09% -0.1805 0.1548)
OKLCH	oklch(83.09% 0.238 139.4)
XYZ	xyz(35.6902, 61.9831, 14.2200)
Luminance	0.6199 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66EA3B #BF3BEA

analogous

#BEEA3B #66EA3B #3BEA67

triadic

#66EA3B #3B66EA #EA3B66

tetradic

#66EA3B #3BBEEA #BF3BEA #EA673B

square

#66EA3B #3BBEEA #BF3BEA #EA673B

split-complementary

#66EA3B #673BEA #EA3BBE

monochromatic

#329A11 #44D116 #66EA3B #91F072 #BCF6AA

Accessibility & contrast

On white

1.57

#66EA3B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.40

#66EA3B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66EA3B

13.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66EA3B	#FFFFFF	#000000	##000000
##66EA3B	1.00	1.57	13.40	13.40
#FFFFFF	1.57	1.00	21.00	21.00
#000000	13.40	21.00	1.00	1.00
##000000	13.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F1D512

Deuteranopia (green-blind)

#E0CA4E

Tritanopia (blue-blind)

#57E2C9

Achromatopsia (no color)

#CECECE

Design tokens & code

CSS

--color: #66ea3b;
/* rgb */ color: rgb(102, 234, 59);
/* oklch */ color: oklch(83.1% 0.238 139.4);

Tailwind

colors: {
  custom: {
    50: '#9ff27d',
    500: '#66ea3b',
    950: '#000000',
  },
}

SCSS

$custom: #66ea3b;
$custom-light: #9ff27d;
$custom-dark: #000000;

JSON

{
  "hex": "#66ea3b",
  "rgb": {
    "r": 102,
    "g": 234,
    "b": 59
  },
  "hsl": {
    "h": 105.257,
    "s": 80.645,
    "l": 57.451
  },
  "oklch": {
    "l": 0.83093,
    "c": 0.23776,
    "h": 139.4
  },
  "luminance": 0.61986
}

Semantic roles & 50–950 ramp

primary

#66EA3B

secondary

#812C9D

accent

#31F7C6

background

#FDFFFB

surface

#F7FEF2

border

#D0D6CC

text

#10170A

muted

#81857D

Preview Lab

Preview with #66EA3B

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

Preview Lab → · Contrast checker → · Palette generator →