#66B42F#66B42F

#66B42F is a light, vivid yellow-green. Relative luminance 0.357; OKLCH L 69.4% C 0.181 H 135.3°. Best body text is #000000 at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#66B42F
RGB	rgb(102, 180, 47)
HSL	hsl(95, 59%, 45%)
HSV	hsv(95, 74%, 71%)
CMYK	cmyk(43.3%, 0%, 73.9%, 29.4%)
CIE-LAB	lab(66.27, -46.16, 56.71)
CIE-LCH	lch(66.27, 73.12, 129.14°)
OKLab	oklab(69.38% -0.1288 0.1273)
OKLCH	oklch(69.38% 0.181 135.3)
XYZ	xyz(22.3133, 35.6712, 8.3983)
Luminance	0.3567 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B42F #7D2FB4

analogous

#A9B42F #66B42F #2FB43B

triadic

#66B42F #2F66B4 #B42F66

tetradic

#66B42F #2FA9B4 #7D2FB4 #B43B2F

square

#66B42F #2FA9B4 #7D2FB4 #B43B2F

split-complementary

#66B42F #3B2FB4 #B42FA9

monochromatic

#2F5316 #4B8322 #66B42F #85D14F #A7DE80

Accessibility & contrast

On white

2.58

#66B42F on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.13

#66B42F on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B42F

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B42F	#FFFFFF	#000000	##000000
##66B42F	1.00	2.58	8.13	8.13
#FFFFFF	2.58	1.00	21.00	21.00
#000000	8.13	21.00	1.00	1.00
##000000	8.13	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#BBA515

Deuteranopia (green-blind)

#B09F3C

Tritanopia (blue-blind)

#64AD9A

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66b42f;
/* rgb */ color: rgb(102, 180, 47);
/* oklch */ color: oklch(69.4% 0.181 135.3);

Tailwind

colors: {
  custom: {
    50: '#98cb71',
    500: '#66b42f',
    950: '#000000',
  },
}

SCSS

$custom: #66b42f;
$custom-light: #98cb71;
$custom-dark: #000000;

JSON

{
  "hex": "#66b42f",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 47
  },
  "hsl": {
    "h": 95.188,
    "s": 58.59,
    "l": 44.51
  },
  "oklch": {
    "l": 0.69377,
    "c": 0.18113,
    "h": 135.3
  },
  "luminance": 0.35673
}

Semantic roles & 50–950 ramp

primary

#66B42F

secondary

#A678C7

accent

#46E2A1

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B42F

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

Preview Lab → · Contrast checker → · Palette generator →