#66C83A#66C83A

#66C83A is a light, vivid green. Relative luminance 0.444; OKLCH L 74.5% C 0.199 H 137.8°. Best body text is #000000 at 9.89:1 contrast (WCAG AA passes).

Color values

HEX	#66C83A
RGB	rgb(102, 200, 58)
HSL	hsl(101, 56%, 51%)
HSV	hsv(101, 71%, 78%)
CMYK	cmyk(49%, 0%, 71%, 21.6%)
CIE-LAB	lab(72.52, -53.29, 59.02)
CIE-LCH	lch(72.52, 79.51, 132.08°)
OKLab	oklab(74.53% -0.1473 0.1337)
OKLCH	oklch(74.53% 0.199 137.8)
XYZ	xyz(26.8966, 44.4369, 11.1621)
Luminance	0.4444 (WCAG relative)
Temperature	warm
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C83A #9C3AC8

analogous

#ADC83A #66C83A #3AC855

triadic

#66C83A #3A66C8 #C83A66

tetradic

#66C83A #3AADC8 #9C3AC8 #C8553A

square

#66C83A #3AADC8 #9C3AC8 #C8553A

split-complementary

#66C83A #553AC8 #C83AAD

monochromatic

#356A1E #4D9A2B #66C83A #8BD56A #B0E39A

Accessibility & contrast

On white

2.12

#66C83A on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.89

#66C83A on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C83A

9.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C83A	#FFFFFF	#000000	##000000
##66C83A	1.00	2.12	9.89	9.89
#FFFFFF	2.12	1.00	21.00	21.00
#000000	9.89	21.00	1.00	1.00
##000000	9.89	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CEB722

Deuteranopia (green-blind)

#C1AF48

Tritanopia (blue-blind)

#5FC1AC

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66c83a;
/* rgb */ color: rgb(102, 200, 58);
/* oklch */ color: oklch(74.5% 0.199 137.8);

Tailwind

colors: {
  custom: {
    50: '#9ad978',
    500: '#66c83a',
    950: '#000000',
  },
}

SCSS

$custom: #66c83a;
$custom-light: #9ad978;
$custom-dark: #000000;

JSON

{
  "hex": "#66c83a",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 58
  },
  "hsl": {
    "h": 101.408,
    "s": 56.349,
    "l": 50.588
  },
  "oklch": {
    "l": 0.74533,
    "c": 0.19895,
    "h": 137.8
  },
  "luminance": 0.44439
}

Semantic roles & 50–950 ramp

primary

#66C83A

secondary

#BB8FCE

accent

#48E0B1

background

#FAFDF7

surface

#F3FBEE

border

#CDD4C9

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66C83A

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

Preview Lab → · Contrast checker → · Palette generator →