#66C830#66C830

#66C830 is a light, highly saturated yellow-green. Relative luminance 0.443; OKLCH L 74.5% C 0.205 H 137.1°. Best body text is #000000 at 9.87:1 contrast (WCAG AA passes).

Color values

HEX	#66C830
RGB	rgb(102, 200, 48)
HSL	hsl(99, 61%, 49%)
HSV	hsv(99, 76%, 78%)
CMYK	cmyk(49%, 0%, 76%, 21.6%)
CIE-LAB	lab(72.46, -53.96, 62.43)
CIE-LCH	lch(72.46, 82.52, 130.84°)
OKLab	oklab(74.46% -0.1498 0.1394)
OKLCH	oklch(74.46% 0.205 137.1)
XYZ	xyz(26.6665, 44.3449, 9.9500)
Luminance	0.4435 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C830 #9230C8

analogous

#B2C830 #66C830 #30C846

triadic

#66C830 #3066C8 #C83066

tetradic

#66C830 #30B2C8 #9230C8 #C84630

square

#66C830 #30B2C8 #9230C8 #C84630

split-complementary

#66C830 #4630C8 #C830B2

monochromatic

#346518 #4D9724 #66C830 #89D85D #ADE48E

Accessibility & contrast

On white

2.13

#66C830 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.87

#66C830 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C830

9.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C830	#FFFFFF	#000000	##000000
##66C830	1.00	2.13	9.87	9.87
#FFFFFF	2.13	1.00	21.00	21.00
#000000	9.87	21.00	1.00	1.00
##000000	9.87	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CFB709

Deuteranopia (green-blind)

#C2AF40

Tritanopia (blue-blind)

#60C1AB

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66c830;
/* rgb */ color: rgb(102, 200, 48);
/* oklch */ color: oklch(74.5% 0.205 137.1);

Tailwind

colors: {
  custom: {
    50: '#9ad973',
    500: '#66c830',
    950: '#000000',
  },
}

SCSS

$custom: #66c830;
$custom-light: #9ad973;
$custom-dark: #000000;

JSON

{
  "hex": "#66c830",
  "rgb": {
    "r": 102,
    "g": 200,
    "b": 48
  },
  "hsl": {
    "h": 98.684,
    "s": 61.29,
    "l": 48.627
  },
  "oklch": {
    "l": 0.74464,
    "c": 0.20465,
    "h": 137.1
  },
  "luminance": 0.44347
}

Semantic roles & 50–950 ramp

primary

#66C830

secondary

#B485CE

accent

#43E4AB

background

#FAFDF7

surface

#F3FBED

border

#CDD4C8

text

#0F1509

muted

#7F837B

Preview Lab

Preview with #66C830

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

Preview Lab → · Contrast checker → · Palette generator →