#66AA28#66AA28

#66AA28 is a light, vivid yellow-green. Relative luminance 0.317; OKLCH L 66.8% C 0.173 H 133.7°. Best body text is #000000 at 7.35:1 contrast (WCAG AA passes).

Color values

HEX	#66AA28
RGB	rgb(102, 170, 40)
HSL	hsl(91, 62%, 41%)
HSV	hsv(91, 76%, 67%)
CMYK	cmyk(40%, 0%, 76.5%, 33.3%)
CIE-LAB	lab(63.12, -42.45, 56.04)
CIE-LCH	lch(63.12, 70.31, 127.15°)
OKLab	oklab(66.78% -0.1193 0.1249)
OKLCH	oklch(66.78% 0.173 133.7)
XYZ	xyz(20.2369, 31.7264, 7.0646)
Luminance	0.3173 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AA28 #6C28AA

analogous

#A7AA28 #66AA28 #28AA2B

triadic

#66AA28 #2866AA #AA2866

tetradic

#66AA28 #28A7AA #6C28AA #AA2B28

square

#66AA28 #28A7AA #6C28AA #AA2B28

split-complementary

#66AA28 #2B28AA #AA28A7

monochromatic

#2B4711 #48781C #66AA28 #84D23E #A4DD6F

Accessibility & contrast

On white

2.86

#66AA28 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.35

#66AA28 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AA28

7.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AA28	#FFFFFF	#000000	##000000
##66AA28	1.00	2.86	7.35	7.35
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.35	21.00	1.00	1.00
##000000	7.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B19C08

Deuteranopia (green-blind)

#A89736

Tritanopia (blue-blind)

#66A391

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #66aa28;
/* rgb */ color: rgb(102, 170, 40);
/* oklch */ color: oklch(66.8% 0.173 133.7);

Tailwind

colors: {
  custom: {
    50: '#97c46c',
    500: '#66aa28',
    950: '#000000',
  },
}

SCSS

$custom: #66aa28;
$custom-light: #97c46c;
$custom-dark: #000000;

JSON

{
  "hex": "#66aa28",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 40
  },
  "hsl": {
    "h": 91.385,
    "s": 61.905,
    "l": 41.176
  },
  "oklch": {
    "l": 0.66782,
    "c": 0.17272,
    "h": 133.7
  },
  "luminance": 0.31727
}

Semantic roles & 50–950 ramp

primary

#66AA28

secondary

#996AC4

accent

#43E598

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66AA28

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

Preview Lab → · Contrast checker → · Palette generator →