#66A828#66A828

#66A828 is a light, vivid yellow-green. Relative luminance 0.310; OKLCH L 66.3% C 0.170 H 133.4°. Best body text is #000000 at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#66A828
RGB	rgb(102, 168, 40)
HSL	hsl(91, 62%, 41%)
HSV	hsv(91, 76%, 66%)
CMYK	cmyk(39.3%, 0%, 76.2%, 34.1%)
CIE-LAB	lab(62.49, -41.61, 55.44)
CIE-LCH	lch(62.49, 69.32, 126.89°)
OKLab	oklab(66.27% -0.117 0.1236)
OKLCH	oklch(66.27% 0.17 133.4)
XYZ	xyz(19.8648, 30.9823, 6.9406)
Luminance	0.3098 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66A828 #6A28A8

analogous

#A6A828 #66A828 #28A82A

triadic

#66A828 #2866A8 #A82866

tetradic

#66A828 #28A6A8 #6A28A8 #A82A28

square

#66A828 #28A6A8 #6A28A8 #A82A28

split-complementary

#66A828 #2A28A8 #A828A6

monochromatic

#2A4510 #48771C #66A828 #84D13D #A3DC6E

Accessibility & contrast

On white

2.92

#66A828 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.20

#66A828 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66A828

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66A828	#FFFFFF	#000000	##000000
##66A828	1.00	2.92	7.20	7.20
#FFFFFF	2.92	1.00	21.00	21.00
#000000	7.20	21.00	1.00	1.00
##000000	7.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#AF9A0A

Deuteranopia (green-blind)

#A69535

Tritanopia (blue-blind)

#66A190

Achromatopsia (no color)

#979797

Design tokens & code

CSS

--color: #66a828;
/* rgb */ color: rgb(102, 168, 40);
/* oklch */ color: oklch(66.3% 0.170 133.4);

Tailwind

colors: {
  custom: {
    50: '#97c26c',
    500: '#66a828',
    950: '#000000',
  },
}

SCSS

$custom: #66a828;
$custom-light: #97c26c;
$custom-dark: #000000;

JSON

{
  "hex": "#66a828",
  "rgb": {
    "r": 102,
    "g": 168,
    "b": 40
  },
  "hsl": {
    "h": 90.938,
    "s": 61.538,
    "l": 40.784
  },
  "oklch": {
    "l": 0.66272,
    "c": 0.17024,
    "h": 133.4
  },
  "luminance": 0.30983
}

Semantic roles & 50–950 ramp

primary

#66A828

secondary

#9769C3

accent

#43E596

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66A828

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

Preview Lab → · Contrast checker → · Palette generator →