#66CD2E#66CD2E

#66CD2E is a light, highly saturated yellow-green. Relative luminance 0.467; OKLCH L 75.7% C 0.211 H 137.3°. Best body text is #000000 at 10.34:1 contrast (WCAG AA passes).

Color values

HEX	#66CD2E
RGB	rgb(102, 205, 46)
HSL	hsl(99, 63%, 49%)
HSV	hsv(99, 78%, 80%)
CMYK	cmyk(50.2%, 0%, 77.6%, 19.6%)
CIE-LAB	lab(73.99, -55.96, 64.52)
CIE-LCH	lch(73.99, 85.41, 130.93°)
OKLab	oklab(75.72% -0.1553 0.1435)
OKLCH	oklch(75.72% 0.211 137.3)
XYZ	xyz(27.8031, 46.6827, 10.1298)
Luminance	0.4668 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CD2E #952ECD

analogous

#B6CD2E #66CD2E #2ECD46

triadic

#66CD2E #2E66CD #CD2E66

tetradic

#66CD2E #2EB6CD #952ECD #CD462E

square

#66CD2E #2EB6CD #952ECD #CD462E

split-complementary

#66CD2E #462ECD #CD2EB6

monochromatic

#346918 #4D9B23 #66CD2E #8ADB5D #AEE68F

Accessibility & contrast

On white

2.03

#66CD2E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.34

#66CD2E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CD2E

10.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CD2E	#FFFFFF	#000000	##000000
##66CD2E	1.00	2.03	10.34	10.34
#FFFFFF	2.03	1.00	21.00	21.00
#000000	10.34	21.00	1.00	1.00
##000000	10.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D4BB00

Deuteranopia (green-blind)

#C7B340

Tritanopia (blue-blind)

#5FC6AF

Achromatopsia (no color)

#B6B6B6

Design tokens & code

CSS

--color: #66cd2e;
/* rgb */ color: rgb(102, 205, 46);
/* oklch */ color: oklch(75.7% 0.211 137.3);

Tailwind

colors: {
  custom: {
    50: '#9bdd73',
    500: '#66cd2e',
    950: '#000000',
  },
}

SCSS

$custom: #66cd2e;
$custom-light: #9bdd73;
$custom-dark: #000000;

JSON

{
  "hex": "#66cd2e",
  "rgb": {
    "r": 102,
    "g": 205,
    "b": 46
  },
  "hsl": {
    "h": 98.868,
    "s": 63.347,
    "l": 49.216
  },
  "oklch": {
    "l": 0.75718,
    "c": 0.21147,
    "h": 137.3
  },
  "luminance": 0.46685
}

Semantic roles & 50–950 ramp

primary

#66CD2E

secondary

#B686D0

accent

#41E6AC

background

#FAFDF7

surface

#F4FBED

border

#CED4C8

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66CD2E

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

Preview Lab → · Contrast checker → · Palette generator →