#66CE2D#66CE2D

#66CE2D is a light, highly saturated yellow-green. Relative luminance 0.472; OKLCH L 76.0% C 0.213 H 137.3°. Best body text is #000000 at 10.43:1 contrast (WCAG AA passes).

Color values

HEX	#66CE2D
RGB	rgb(102, 206, 45)
HSL	hsl(99, 64%, 49%)
HSV	hsv(99, 78%, 81%)
CMYK	cmyk(50.5%, 0%, 78.2%, 19.2%)
CIE-LAB	lab(74.29, -56.39, 65.11)
CIE-LCH	lch(74.29, 86.14, 130.89°)
OKLab	oklab(75.97% -0.1565 0.1446)
OKLCH	oklch(75.97% 0.213 137.3)
XYZ	xyz(28.0236, 47.1548, 10.1072)
Luminance	0.4716 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66CE2D #952DCE

analogous

#B7CE2D #66CE2D #2DCE45

triadic

#66CE2D #2D66CE #CE2D66

tetradic

#66CE2D #2DB7CE #952DCE #CE452D

square

#66CE2D #2DB7CE #952DCE #CE452D

split-complementary

#66CE2D #452DCE #CE2DB7

monochromatic

#346A17 #4D9C22 #66CE2D #8ADC5D #AEE78F

Accessibility & contrast

On white

2.01

#66CE2D on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

10.43

#66CE2D on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66CE2D

10.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66CE2D	#FFFFFF	#000000	##000000
##66CE2D	1.00	2.01	10.43	10.43
#FFFFFF	2.01	1.00	21.00	21.00
#000000	10.43	21.00	1.00	1.00
##000000	10.43	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D5BC00

Deuteranopia (green-blind)

#C7B33F

Tritanopia (blue-blind)

#5FC7B0

Achromatopsia (no color)

#B7B7B7

Design tokens & code

CSS

--color: #66ce2d;
/* rgb */ color: rgb(102, 206, 45);
/* oklch */ color: oklch(76.0% 0.213 137.3);

Tailwind

colors: {
  custom: {
    50: '#9bde73',
    500: '#66ce2d',
    950: '#000000',
  },
}

SCSS

$custom: #66ce2d;
$custom-light: #9bde73;
$custom-dark: #000000;

JSON

{
  "hex": "#66ce2d",
  "rgb": {
    "r": 102,
    "g": 206,
    "b": 45
  },
  "hsl": {
    "h": 98.758,
    "s": 64.143,
    "l": 49.216
  },
  "oklch": {
    "l": 0.75965,
    "c": 0.2131,
    "h": 137.3
  },
  "luminance": 0.47157
}

Semantic roles & 50–950 ramp

primary

#66CE2D

secondary

#B686D1

accent

#41E7AC

background

#FAFDF7

surface

#F4FBED

border

#CED4C8

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66CE2D

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

Preview Lab → · Contrast checker → · Palette generator →