#66A625#66A625

#66A625 is a light, vivid yellow-green. Relative luminance 0.302; OKLCH L 65.7% C 0.169 H 132.9°. Best body text is #000000 at 7.05:1 contrast (WCAG AA passes).

Color values

HEX	#66A625
RGB	rgb(102, 166, 37)
HSL	hsl(90, 64%, 40%)
HSV	hsv(90, 78%, 65%)
CMYK	cmyk(38.6%, 0%, 77.7%, 34.9%)
CIE-LAB	lab(61.85, -40.93, 55.82)
CIE-LCH	lch(61.85, 69.22, 126.25°)
OKLab	oklab(65.74% -0.1154 0.124)
OKLCH	oklch(65.74% 0.169 132.9)
XYZ	xyz(19.4494, 30.2299, 6.5601)
Luminance	0.3023 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A625 #6525A6

analogous

#A6A525 #66A625 #26A625

triadic

#66A625 #2566A6 #A62566

tetradic

#66A625 #25A6A5 #6525A6 #A62526

square

#66A625 #25A6A5 #6525A6 #A62526

split-complementary

#66A625 #2526A6 #A525A6

monochromatic

#28420F #47741A #66A625 #85D236 #A3DD68

Accessibility & contrast

On white

2.98

#66A625 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.05

#66A625 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A625

7.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A625	#FFFFFF	#000000	##000000
##66A625	1.00	2.98	7.05	7.05
#FFFFFF	2.98	1.00	21.00	21.00
#000000	7.05	21.00	1.00	1.00
##000000	7.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AD9902

Deuteranopia (green-blind)

#A49433

Tritanopia (blue-blind)

#669F8E

Achromatopsia (no color)

#959595

Design tokens & code

CSS

--color: #66a625;
/* rgb */ color: rgb(102, 166, 37);
/* oklch */ color: oklch(65.7% 0.169 132.9);

Tailwind

colors: {
  custom: {
    50: '#97c16a',
    500: '#66a625',
    950: '#000000',
  },
}

SCSS

$custom: #66a625;
$custom-light: #97c16a;
$custom-dark: #000000;

JSON

{
  "hex": "#66a625",
  "rgb": {
    "r": 102,
    "g": 166,
    "b": 37
  },
  "hsl": {
    "h": 89.767,
    "s": 63.547,
    "l": 39.804
  },
  "oklch": {
    "l": 0.65743,
    "c": 0.16937,
    "h": 132.9
  },
  "luminance": 0.30231
}

Semantic roles & 50–950 ramp

primary

#66A625

secondary

#9364C3

accent

#41E793

background

#F9FBF6

surface

#F2F7EC

border

#CCD0C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66A625

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

Preview Lab → · Contrast checker → · Palette generator →