#66AA25#66AA25

#66AA25 is a light, vivid yellow-green. Relative luminance 0.317; OKLCH L 66.8% C 0.174 H 133.5°. Best body text is #000000 at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#66AA25
RGB	rgb(102, 170, 37)
HSL	hsl(91, 64%, 41%)
HSV	hsv(91, 78%, 67%)
CMYK	cmyk(40%, 0%, 78.2%, 33.3%)
CIE-LAB	lab(63.10, -42.62, 57.01)
CIE-LCH	lch(63.10, 71.18, 126.79°)
OKLab	oklab(66.76% -0.12 0.1265)
OKLCH	oklch(66.76% 0.174 133.5)
XYZ	xyz(20.1878, 31.7068, 6.8062)
Luminance	0.3171 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AA25 #6925AA

analogous

#A8AA25 #66AA25 #25AA27

triadic

#66AA25 #2566AA #AA2566

tetradic

#66AA25 #25A8AA #6925AA #AA2725

square

#66AA25 #25A8AA #6925AA #AA2725

split-complementary

#66AA25 #2725AA #AA25A8

monochromatic

#2A450F #48781A #66AA25 #84D438 #A3DF6B

Accessibility & contrast

On white

2.86

#66AA25 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.34

#66AA25 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AA25

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AA25	#FFFFFF	#000000	##000000
##66AA25	1.00	2.86	7.34	7.34
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.34	21.00	1.00	1.00
##000000	7.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B19C00

Deuteranopia (green-blind)

#A89733

Tritanopia (blue-blind)

#66A391

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #66aa25;
/* rgb */ color: rgb(102, 170, 37);
/* oklch */ color: oklch(66.8% 0.174 133.5);

Tailwind

colors: {
  custom: {
    50: '#97c46b',
    500: '#66aa25',
    950: '#000000',
  },
}

SCSS

$custom: #66aa25;
$custom-light: #97c46b;
$custom-dark: #000000;

JSON

{
  "hex": "#66aa25",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 37
  },
  "hsl": {
    "h": 90.677,
    "s": 64.251,
    "l": 40.588
  },
  "oklch": {
    "l": 0.66764,
    "c": 0.17431,
    "h": 133.5
  },
  "luminance": 0.31708
}

Semantic roles & 50–950 ramp

primary

#66AA25

secondary

#9666C5

accent

#41E796

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66AA25

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

Preview Lab → · Contrast checker → · Palette generator →