#66C635#66C635

#66C635 is a light, vivid yellow-green. Relative luminance 0.435; OKLCH L 74.0% C 0.200 H 137.3°. Best body text is #000000 at 9.69:1 contrast (WCAG AA passes).

Color values

HEX	#66C635
RGB	rgb(102, 198, 53)
HSL	hsl(100, 58%, 49%)
HSV	hsv(100, 73%, 78%)
CMYK	cmyk(48.5%, 0%, 73.2%, 22.4%)
CIE-LAB	lab(71.87, -52.87, 60.16)
CIE-LCH	lch(71.87, 80.10, 131.31°)
OKLab	oklab(73.99% -0.1466 0.1354)
OKLCH	oklch(73.99% 0.2 137.3)
XYZ	xyz(26.3154, 43.4682, 10.3710)
Luminance	0.4347 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C635 #9535C6

analogous

#AFC635 #66C635 #35C64D

triadic

#66C635 #3566C6 #C63566

tetradic

#66C635 #35AFC6 #9535C6 #C64D35

square

#66C635 #35AFC6 #9535C6 #C64D35

split-complementary

#66C635 #4D35C6 #C635AF

monochromatic

#34651B #4D9628 #66C635 #8AD563 #AEE293

Accessibility & contrast

On white

2.17

#66C635 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.69

#66C635 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C635

9.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C635	#FFFFFF	#000000	##000000
##66C635	1.00	2.17	9.69	9.69
#FFFFFF	2.17	1.00	21.00	21.00
#000000	9.69	21.00	1.00	1.00
##000000	9.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#CDB519

Deuteranopia (green-blind)

#C0AD44

Tritanopia (blue-blind)

#60BFAA

Achromatopsia (no color)

#B0B0B0

Design tokens & code

CSS

--color: #66c635;
/* rgb */ color: rgb(102, 198, 53);
/* oklch */ color: oklch(74.0% 0.200 137.3);

Tailwind

colors: {
  custom: {
    50: '#9ad876',
    500: '#66c635',
    950: '#000000',
  },
}

SCSS

$custom: #66c635;
$custom-light: #9ad876;
$custom-dark: #000000;

JSON

{
  "hex": "#66c635",
  "rgb": {
    "r": 102,
    "g": 198,
    "b": 53
  },
  "hsl": {
    "h": 99.724,
    "s": 57.769,
    "l": 49.216
  },
  "oklch": {
    "l": 0.7399,
    "c": 0.19953,
    "h": 137.3
  },
  "luminance": 0.4347
}

Semantic roles & 50–950 ramp

primary

#66C635

secondary

#B68ACD

accent

#47E1AD

background

#FAFDF7

surface

#F3FAED

border

#CDD3C8

text

#0F1409

muted

#7F837B

Preview Lab

Preview with #66C635

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

Preview Lab → · Contrast checker → · Palette generator →