#66AA27#66AA27

#66AA27 is a light, vivid yellow-green. Relative luminance 0.317; OKLCH L 66.8% C 0.173 H 133.6°. Best body text is #000000 at 7.34:1 contrast (WCAG AA passes).

Color values

HEX	#66AA27
RGB	rgb(102, 170, 39)
HSL	hsl(91, 63%, 41%)
HSV	hsv(91, 77%, 67%)
CMYK	cmyk(40%, 0%, 77.1%, 33.3%)
CIE-LAB	lab(63.11, -42.51, 56.37)
CIE-LCH	lch(63.11, 70.60, 127.02°)
OKLab	oklab(66.78% -0.1195 0.1254)
OKLCH	oklch(66.78% 0.173 133.6)
XYZ	xyz(20.2201, 31.7197, 6.9762)
Luminance	0.3172 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66AA27 #6B27AA

analogous

#A7AA27 #66AA27 #27AA29

triadic

#66AA27 #2766AA #AA2766

tetradic

#66AA27 #27A7AA #6B27AA #AA2927

square

#66AA27 #27A7AA #6B27AA #AA2927

split-complementary

#66AA27 #2927AA #AA27A7

monochromatic

#2A4610 #48781C #66AA27 #84D23C #A4DE6E

Accessibility & contrast

On white

2.86

#66AA27 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.34

#66AA27 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66AA27

7.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66AA27	#FFFFFF	#000000	##000000
##66AA27	1.00	2.86	7.34	7.34
#FFFFFF	2.86	1.00	21.00	21.00
#000000	7.34	21.00	1.00	1.00
##000000	7.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B19C05

Deuteranopia (green-blind)

#A89735

Tritanopia (blue-blind)

#66A391

Achromatopsia (no color)

#999999

Design tokens & code

CSS

--color: #66aa27;
/* rgb */ color: rgb(102, 170, 39);
/* oklch */ color: oklch(66.8% 0.173 133.6);

Tailwind

colors: {
  custom: {
    50: '#97c46b',
    500: '#66aa27',
    950: '#000000',
  },
}

SCSS

$custom: #66aa27;
$custom-light: #97c46b;
$custom-dark: #000000;

JSON

{
  "hex": "#66aa27",
  "rgb": {
    "r": 102,
    "g": 170,
    "b": 39
  },
  "hsl": {
    "h": 91.145,
    "s": 62.679,
    "l": 40.98
  },
  "oklch": {
    "l": 0.66776,
    "c": 0.17326,
    "h": 133.6
  },
  "luminance": 0.31721
}

Semantic roles & 50–950 ramp

primary

#66AA27

secondary

#9869C4

accent

#42E697

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1207

muted

#7E817A

Preview Lab

Preview with #66AA27

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

Preview Lab → · Contrast checker → · Palette generator →