#66AC33#66AC33

#66AC33 is a light, vivid yellow-green. Relative luminance 0.326; OKLCH L 67.4% C 0.169 H 134.8°. Best body text is #000000 at 7.51:1 contrast (WCAG AA passes).

Color values

HEX	#66AC33
RGB	rgb(102, 172, 51)
HSL	hsl(95, 54%, 44%)
HSV	hsv(95, 70%, 67%)
CMYK	cmyk(40.7%, 0%, 70.3%, 32.5%)
CIE-LAB	lab(63.81, -42.56, 52.73)
CIE-LCH	lch(63.81, 67.76, 128.90°)
OKLab	oklab(67.37% -0.1188 0.1196)
OKLCH	oklch(67.37% 0.169 134.8)
XYZ	xyz(20.8291, 32.5678, 8.3200)
Luminance	0.3257 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AC33 #7933AC

analogous

#A2AC33 #66AC33 #33AC3C

triadic

#66AC33 #3366AC #AC3366

tetradic

#66AC33 #33A2AC #7933AC #AC3C33

square

#66AC33 #33A2AC #7933AC #AC3C33

split-complementary

#66AC33 #3C33AC #AC33A2

monochromatic

#2E4E17 #4A7D25 #66AC33 #84CB51 #A6D980

Accessibility & contrast

On white

2.79

#66AC33 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.51

#66AC33 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AC33

7.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AC33	#FFFFFF	#000000	##000000
##66AC33	1.00	2.79	7.51	7.51
#FFFFFF	2.79	1.00	21.00	21.00
#000000	7.51	21.00	1.00	1.00
##000000	7.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B29E20

Deuteranopia (green-blind)

#A9983E

Tritanopia (blue-blind)

#65A594

Achromatopsia (no color)

#9B9B9B

Design tokens & code

CSS

--color: #66ac33;
/* rgb */ color: rgb(102, 172, 51);
/* oklch */ color: oklch(67.4% 0.169 134.8);

Tailwind

colors: {
  custom: {
    50: '#97c572',
    500: '#66ac33',
    950: '#000000',
  },
}

SCSS

$custom: #66ac33;
$custom-light: #97c572;
$custom-dark: #000000;

JSON

{
  "hex": "#66ac33",
  "rgb": {
    "r": 102,
    "g": 172,
    "b": 51
  },
  "hsl": {
    "h": 94.711,
    "s": 54.26,
    "l": 43.725
  },
  "oklch": {
    "l": 0.67372,
    "c": 0.16855,
    "h": 134.8
  },
  "luminance": 0.32569
}

Semantic roles & 50–950 ramp

primary

#66AC33

secondary

#A378C2

accent

#4ADE9F

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66AC33

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

Preview Lab → · Contrast checker → · Palette generator →