#66B227#66B227

#66B227 is a light, vivid yellow-green. Relative luminance 0.348; OKLCH L 68.8% C 0.183 H 134.6°. Best body text is #000000 at 7.96:1 contrast (WCAG AA passes).

Color values

HEX	#66B227
RGB	rgb(102, 178, 39)
HSL	hsl(93, 64%, 43%)
HSV	hsv(93, 78%, 70%)
CMYK	cmyk(42.7%, 0%, 78.1%, 30.2%)
CIE-LAB	lab(65.60, -45.83, 58.74)
CIE-LCH	lch(65.60, 74.50, 127.96°)
OKLab	oklab(68.82% -0.1285 0.1304)
OKLCH	oklch(68.82% 0.183 134.6)
XYZ	xyz(21.7657, 34.8108, 7.4914)
Luminance	0.3481 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B227 #7327B2

analogous

#ABB227 #66B227 #27B22E

triadic

#66B227 #2766B2 #B22766

tetradic

#66B227 #27ABB2 #7327B2 #B22E27

square

#66B227 #27ABB2 #7327B2 #B22E27

split-complementary

#66B227 #2E27B2 #B227AB

monochromatic

#2C4E11 #49801C #66B227 #84D541 #A5E073

Accessibility & contrast

On white

2.64

#66B227 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.96

#66B227 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B227

7.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B227	#FFFFFF	#000000	##000000
##66B227	1.00	2.64	7.96	7.96
#FFFFFF	2.64	1.00	21.00	21.00
#000000	7.96	21.00	1.00	1.00
##000000	7.96	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B9A300

Deuteranopia (green-blind)

#AF9D36

Tritanopia (blue-blind)

#65AB98

Achromatopsia (no color)

#9F9F9F

Design tokens & code

CSS

--color: #66b227;
/* rgb */ color: rgb(102, 178, 39);
/* oklch */ color: oklch(68.8% 0.183 134.6);

Tailwind

colors: {
  custom: {
    50: '#98c96d',
    500: '#66b227',
    950: '#000000',
  },
}

SCSS

$custom: #66b227;
$custom-light: #98c96d;
$custom-dark: #000000;

JSON

{
  "hex": "#66b227",
  "rgb": {
    "r": 102,
    "g": 178,
    "b": 39
  },
  "hsl": {
    "h": 92.806,
    "s": 64.055,
    "l": 42.549
  },
  "oklch": {
    "l": 0.68816,
    "c": 0.18304,
    "h": 134.6
  },
  "luminance": 0.34812
}

Semantic roles & 50–950 ramp

primary

#66B227

secondary

#9F6DC8

accent

#41E79C

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B227

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

Preview Lab → · Contrast checker → · Palette generator →