#66B554#66B554

#66B554 is a light, vivid green. Relative luminance 0.365; OKLCH L 70.0% C 0.154 H 140.0°. Best body text is #000000 at 8.30:1 contrast (WCAG AA passes).

Color values

HEX	#66B554
RGB	rgb(102, 181, 84)
HSL	hsl(109, 40%, 52%)
HSV	hsv(109, 54%, 71%)
CMYK	cmyk(43.6%, 0%, 53.6%, 29%)
CIE-LAB	lab(66.91, -43.09, 41.55)
CIE-LCH	lch(66.91, 59.86, 136.04°)
OKLab	oklab(70.01% -0.118 0.0991)
OKLCH	oklch(70.01% 0.154 140)
XYZ	xyz(23.6027, 36.5112, 14.1895)
Luminance	0.3651 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B554 #A354B5

analogous

#97B554 #66B554 #54B573

triadic

#66B554 #5466B5 #B55466

tetradic

#66B554 #5497B5 #A354B5 #B57354

square

#66B554 #5497B5 #A354B5 #B57354

split-complementary

#66B554 #7354B5 #B55497

monochromatic

#36642B #4D8E3E #66B554 #8CC77F #B2DAA9

Accessibility & contrast

On white

2.53

#66B554 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.30

#66B554 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B554

8.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B554	#FFFFFF	#000000	##000000
##66B554	1.00	2.53	8.30	8.30
#FFFFFF	2.53	1.00	21.00	21.00
#000000	8.30	21.00	1.00	1.00
##000000	8.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BAA74B

Deuteranopia (green-blind)

#AFA05B

Tritanopia (blue-blind)

#5FB09F

Achromatopsia (no color)

#A3A3A3

Design tokens & code

CSS

--color: #66b554;
/* rgb */ color: rgb(102, 181, 84);
/* oklch */ color: oklch(70.0% 0.154 140.0);

Tailwind

colors: {
  custom: {
    50: '#97cc86',
    500: '#66b554',
    950: '#000000',
  },
}

SCSS

$custom: #66b554;
$custom-light: #97cc86;
$custom-dark: #000000;

JSON

{
  "hex": "#66b554",
  "rgb": {
    "r": 102,
    "g": 181,
    "b": 84
  },
  "hsl": {
    "h": 108.866,
    "s": 39.592,
    "l": 51.961
  },
  "oklch": {
    "l": 0.70009,
    "c": 0.15411,
    "h": 140
  },
  "luminance": 0.36513
}

Semantic roles & 50–950 ramp

primary

#66B554

secondary

#C09DC8

accent

#58CFB9

background

#F9FCF8

surface

#F2F9F0

border

#CCD2CB

text

#0E130B

muted

#7E827C

Preview Lab

Preview with #66B554

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

Preview Lab → · Contrast checker → · Palette generator →