#66B027#66B027

#66B027 is a light, vivid yellow-green. Relative luminance 0.340; OKLCH L 68.3% C 0.181 H 134.3°. Best body text is #000000 at 7.80:1 contrast (WCAG AA passes).

Color values

HEX	#66B027
RGB	rgb(102, 176, 39)
HSL	hsl(92, 64%, 42%)
HSV	hsv(92, 78%, 69%)
CMYK	cmyk(42%, 0%, 77.8%, 31%)
CIE-LAB	lab(64.98, -45.01, 58.15)
CIE-LCH	lch(64.98, 73.53, 127.74°)
OKLab	oklab(68.31% -0.1263 0.1292)
OKLCH	oklch(68.31% 0.181 134.3)
XYZ	xyz(21.3706, 34.0208, 7.3597)
Luminance	0.3402 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B027 #7127B0

analogous

#ABB027 #66B027 #27B02D

triadic

#66B027 #2766B0 #B02766

tetradic

#66B027 #27ABB0 #7127B0 #B02D27

square

#66B027 #27ABB0 #7127B0 #B02D27

split-complementary

#66B027 #2D27B0 #B027AB

monochromatic

#2C4C11 #497E1C #66B027 #84D540 #A4E072

Accessibility & contrast

On white

2.69

#66B027 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

7.80

#66B027 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B027

7.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B027	#FFFFFF	#000000	##000000
##66B027	1.00	2.69	7.80	7.80
#FFFFFF	2.69	1.00	21.00	21.00
#000000	7.80	21.00	1.00	1.00
##000000	7.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#B7A100

Deuteranopia (green-blind)

#AD9C36

Tritanopia (blue-blind)

#65A996

Achromatopsia (no color)

#9E9E9E

Design tokens & code

CSS

--color: #66b027;
/* rgb */ color: rgb(102, 176, 39);
/* oklch */ color: oklch(68.3% 0.181 134.3);

Tailwind

colors: {
  custom: {
    50: '#98c86c',
    500: '#66b027',
    950: '#000000',
  },
}

SCSS

$custom: #66b027;
$custom-light: #98c86c;
$custom-dark: #000000;

JSON

{
  "hex": "#66b027",
  "rgb": {
    "r": 102,
    "g": 176,
    "b": 39
  },
  "hsl": {
    "h": 92.409,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.68306,
    "c": 0.18062,
    "h": 134.3
  },
  "luminance": 0.34022
}

Semantic roles & 50–950 ramp

primary

#66B027

secondary

#9D6CC7

accent

#41E79B

background

#F9FCF6

surface

#F2F8EC

border

#CCD1C7

text

#0E1307

muted

#7E827A

Preview Lab

Preview with #66B027

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

Preview Lab → · Contrast checker → · Palette generator →