#66BB1E#66BB1E

#66BB1E is a light, vivid yellow-green. Relative luminance 0.385; OKLCH L 71.1% C 0.198 H 135.0°. Best body text is #000000 at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#66BB1E
RGB	rgb(102, 187, 30)
HSL	hsl(92, 72%, 43%)
HSV	hsv(92, 84%, 73%)
CMYK	cmyk(45.5%, 0%, 84%, 26.7%)
CIE-LAB	lab(68.36, -49.86, 63.77)
CIE-LCH	lch(68.36, 80.95, 128.02°)
OKLab	oklab(71.07% -0.1398 0.1397)
OKLCH	oklch(71.07% 0.198 135)
XYZ	xyz(23.4836, 38.4577, 7.4137)
Luminance	0.3846 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BB1E #731EBB

analogous

#B4BB1E #66BB1E #1EBB25

triadic

#66BB1E #1E66BB #BB1E66

tetradic

#66BB1E #1EB4BB #731EBB #BB251E

square

#66BB1E #1EB4BB #731EBB #BB251E

split-complementary

#66BB1E #251EBB #BB1EB4

monochromatic

#2C520D #498616 #66BB1E #84DF37 #A5E76C

Accessibility & contrast

On white

2.42

#66BB1E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.69

#66BB1E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BB1E

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BB1E	#FFFFFF	#000000	##000000
##66BB1E	1.00	2.42	8.69	8.69
#FFFFFF	2.42	1.00	21.00	21.00
#000000	8.69	21.00	1.00	1.00
##000000	8.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AB00

Deuteranopia (green-blind)

#B7A432

Tritanopia (blue-blind)

#64B49F

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66bb1e;
/* rgb */ color: rgb(102, 187, 30);
/* oklch */ color: oklch(71.1% 0.198 135.0);

Tailwind

colors: {
  custom: {
    50: '#9ad06a',
    500: '#66bb1e',
    950: '#000000',
  },
}

SCSS

$custom: #66bb1e;
$custom-light: #9ad06a;
$custom-dark: #000000;

JSON

{
  "hex": "#66bb1e",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 30
  },
  "hsl": {
    "h": 92.484,
    "s": 72.35,
    "l": 42.549
  },
  "oklch": {
    "l": 0.71065,
    "c": 0.19761,
    "h": 135
  },
  "luminance": 0.38459
}

Semantic roles & 50–950 ramp

primary

#66BB1E

secondary

#9F67CD

accent

#39EF9B

background

#FAFCF6

surface

#F3F9EC

border

#CDD2C7

text

#0F1407

muted

#7F827A

Preview Lab

Preview with #66BB1E

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

Preview Lab → · Contrast checker → · Palette generator →