#66C534#66C534

#66C534 is a light, vivid yellow-green. Relative luminance 0.430; OKLCH L 73.7% C 0.199 H 137.1°. Best body text is #000000 at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#66C534
RGB	rgb(102, 197, 52)
HSL	hsl(99, 58%, 49%)
HSV	hsv(99, 74%, 77%)
CMYK	cmyk(48.2%, 0%, 73.6%, 22.7%)
CIE-LAB	lab(71.56, -52.56, 60.20)
CIE-LCH	lch(71.56, 79.92, 131.12°)
OKLab	oklab(73.73% -0.1458 0.1353)
OKLCH	oklch(73.73% 0.199 137.1)
XYZ	xyz(26.0648, 43.0034, 10.1752)
Luminance	0.4300 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C534 #9334C5

analogous

#AFC534 #66C534 #34C54A

triadic

#66C534 #3466C5 #C53466

tetradic

#66C534 #34AFC5 #9334C5 #C54A34

square

#66C534 #34AFC5 #9334C5 #C54A34

split-complementary

#66C534 #4A34C5 #C534AF

monochromatic

#34641A #4D9527 #66C534 #89D561 #ADE291

Accessibility & contrast

On white

2.19

#66C534 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.60

#66C534 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C534

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C534	#FFFFFF	#000000	##000000
##66C534	1.00	2.19	9.60	9.60
#FFFFFF	2.19	1.00	21.00	21.00
#000000	9.60	21.00	1.00	1.00
##000000	9.60	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CCB417

Deuteranopia (green-blind)

#BFAC43

Tritanopia (blue-blind)

#60BEA9

Achromatopsia (no color)

#AFAFAF

Design tokens & code

CSS

--color: #66c534;
/* rgb */ color: rgb(102, 197, 52);
/* oklch */ color: oklch(73.7% 0.199 137.1);

Tailwind

colors: {
  custom: {
    50: '#9ad775',
    500: '#66c534',
    950: '#000000',
  },
}

SCSS

$custom: #66c534;
$custom-light: #9ad775;
$custom-dark: #000000;

JSON

{
  "hex": "#66c534",
  "rgb": {
    "r": 102,
    "g": 197,
    "b": 52
  },
  "hsl": {
    "h": 99.31,
    "s": 58.233,
    "l": 48.824
  },
  "oklch": {
    "l": 0.7373,
    "c": 0.19891,
    "h": 137.1
  },
  "luminance": 0.43005
}

Semantic roles & 50–950 ramp

primary

#66C534

secondary

#B588CD

accent

#46E1AC

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1409

muted

#7F837B

Preview Lab

Preview with #66C534

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

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