#66AA1F#66AA1F

#66AA1F is a light, vivid yellow-green. Relative luminance 0.317; OKLCH L 66.7% C 0.177 H 133.1°. Best body text is #000000 at 7.33:1 contrast (WCAG AA passes).

Color values

HEX	#66AA1F
RGB	rgb(102, 170, 31)
HSL	hsl(89, 69%, 39%)
HSV	hsv(89, 82%, 67%)
CMYK	cmyk(40%, 0%, 81.8%, 33.3%)
CIE-LAB	lab(63.07, -42.93, 58.77)
CIE-LCH	lch(63.07, 72.78, 126.15°)
OKLab	oklab(66.73% -0.1211 0.1293)
OKLCH	oklch(66.73% 0.177 133.1)
XYZ	xyz(20.1012, 31.6722, 6.3503)
Luminance	0.3167 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AA1F #631FAA

analogous

#AAA91F #66AA1F #20AA1F

triadic

#66AA1F #1F66AA #AA1F66

tetradic

#66AA1F #1FAAA9 #631FAA #AA1F20

square

#66AA1F #1FAAA9 #631FAA #AA1F20

split-complementary

#66AA1F #1F20AA #A91FAA

monochromatic

#28420C #477616 #66AA1F #85D92D #A3E261

Accessibility & contrast

On white

2.86

#66AA1F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.33

#66AA1F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AA1F

7.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AA1F	#FFFFFF	#000000	##000000
##66AA1F	1.00	2.86	7.33	7.33
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.33	21.00	1.00	1.00
##000000	7.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B19C00

Deuteranopia (green-blind)

#A8972F

Tritanopia (blue-blind)

#66A391

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #66aa1f;
/* rgb */ color: rgb(102, 170, 31);
/* oklch */ color: oklch(66.7% 0.177 133.1);

Tailwind

colors: {
  custom: {
    50: '#98c468',
    500: '#66aa1f',
    950: '#000000',
  },
}

SCSS

$custom: #66aa1f;
$custom-light: #98c468;
$custom-dark: #000000;

JSON

{
  "hex": "#66aa1f",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 31
  },
  "hsl": {
    "h": 89.353,
    "s": 69.154,
    "l": 39.412
  },
  "oklch": {
    "l": 0.66731,
    "c": 0.17715,
    "h": 133.1
  },
  "luminance": 0.31673
}

Semantic roles & 50–950 ramp

primary

#66AA1F

secondary

#915EC7

accent

#3CEC92

background

#F9FCF6

surface

#F2F8EB

border

#CCD1C6

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66AA1F

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

Preview Lab → · Contrast checker → · Palette generator →