#66E03B#66E03B

#66E03B is a light, highly saturated green. Relative luminance 0.565; OKLCH L 80.6% C 0.227 H 139.0°. Best body text is #000000 at 12.29:1 contrast (WCAG AA passes).

Color values

HEX	#66E03B
RGB	rgb(102, 224, 59)
HSL	hsl(104, 73%, 55%)
HSV	hsv(104, 74%, 88%)
CMYK	cmyk(54.5%, 0%, 73.7%, 12.2%)
CIE-LAB	lab(79.87, -62.08, 66.06)
CIE-LCH	lch(79.87, 90.65, 133.22°)
OKLab	oklab(80.59% -0.171 0.1485)
OKLCH	oklch(80.59% 0.227 139)
XYZ	xyz(32.9233, 56.4492, 13.2977)
Luminance	0.5645 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E03B #B53BE0

analogous

#B8E03B #66E03B #3BE063

triadic

#66E03B #3B66E0 #E03B66

tetradic

#66E03B #3BB8E0 #B53BE0 #E0633B

square

#66E03B #3BB8E0 #B53BE0 #E0633B

split-complementary

#66E03B #633BE0 #E03BB8

monochromatic

#348B16 #48C01E #66E03B #8FE870 #B8F1A5

Accessibility & contrast

On white

1.71

#66E03B on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.29

#66E03B on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E03B

12.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E03B	#FFFFFF	#000000	##000000
##66E03B	1.00	1.71	12.29	12.29
#FFFFFF	1.71	1.00	21.00	21.00
#000000	12.29	21.00	1.00	1.00
##000000	12.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E7CC19

Deuteranopia (green-blind)

#D7C24C

Tritanopia (blue-blind)

#5AD8C0

Achromatopsia (no color)

#C6C6C6

Design tokens & code

CSS

--color: #66e03b;
/* rgb */ color: rgb(102, 224, 59);
/* oklch */ color: oklch(80.6% 0.227 139.0);

Tailwind

colors: {
  custom: {
    50: '#9deb7c',
    500: '#66e03b',
    950: '#000000',
  },
}

SCSS

$custom: #66e03b;
$custom-light: #9deb7c;
$custom-dark: #000000;

JSON

{
  "hex": "#66e03b",
  "rgb": {
    "r": 102,
    "g": 224,
    "b": 59
  },
  "hsl": {
    "h": 104.364,
    "s": 72.687,
    "l": 55.49
  },
  "oklch": {
    "l": 0.80588,
    "c": 0.22652,
    "h": 139
  },
  "luminance": 0.56452
}

Semantic roles & 50–950 ramp

primary

#66E03B

secondary

#772F90

accent

#38EFC0

background

#FCFEFB

surface

#F6FDF2

border

#D0D5CC

text

#10160A

muted

#80847D

Preview Lab

Preview with #66E03B

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

Preview Lab → · Contrast checker → · Palette generator →