#66B42C#66B42C

#66B42C is a light, vivid yellow-green. Relative luminance 0.356; OKLCH L 69.4% C 0.183 H 135.1°. Best body text is #000000 at 8.13:1 contrast (WCAG AA passes).

Color values

HEX	#66B42C
RGB	rgb(102, 180, 44)
HSL	hsl(94, 61%, 44%)
HSV	hsv(94, 76%, 71%)
CMYK	cmyk(43.3%, 0%, 75.6%, 29.4%)
CIE-LAB	lab(66.25, -46.35, 57.73)
CIE-LCH	lch(66.25, 74.03, 128.76°)
OKLab	oklab(69.36% -0.1295 0.129)
OKLCH	oklch(69.36% 0.183 135.1)
XYZ	xyz(22.2549, 35.6479, 8.0905)
Luminance	0.3565 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66B42C #7A2CB4

analogous

#AAB42C #66B42C #2CB436

triadic

#66B42C #2C66B4 #B42C66

tetradic

#66B42C #2CAAB4 #7A2CB4 #B4362C

square

#66B42C #2CAAB4 #7A2CB4 #B4362C

split-complementary

#66B42C #362CB4 #B42CAA

monochromatic

#2E5214 #4A8320 #66B42C #85D34A #A6DF7C

Accessibility & contrast

On white

2.58

#66B42C on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.13

#66B42C on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66B42C

8.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66B42C	#FFFFFF	#000000	##000000
##66B42C	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)

#BBA50D

Deuteranopia (green-blind)

#B09F3A

Tritanopia (blue-blind)

#64AD9A

Achromatopsia (no color)

#A1A1A1

Design tokens & code

CSS

--color: #66b42c;
/* rgb */ color: rgb(102, 180, 44);
/* oklch */ color: oklch(69.4% 0.183 135.1);

Tailwind

colors: {
  custom: {
    50: '#98cb6f',
    500: '#66b42c',
    950: '#000000',
  },
}

SCSS

$custom: #66b42c;
$custom-light: #98cb6f;
$custom-dark: #000000;

JSON

{
  "hex": "#66b42c",
  "rgb": {
    "r": 102,
    "g": 180,
    "b": 44
  },
  "hsl": {
    "h": 94.412,
    "s": 60.714,
    "l": 43.922
  },
  "oklch": {
    "l": 0.69357,
    "c": 0.18284,
    "h": 135.1
  },
  "luminance": 0.35649
}

Semantic roles & 50–950 ramp

primary

#66B42C

secondary

#A475C7

accent

#44E4A0

background

#F9FCF7

surface

#F2F8ED

border

#CCD1C8

text

#0E1308

muted

#7E827B

Preview Lab

Preview with #66B42C

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

Preview Lab → · Contrast checker → · Palette generator →