#66C91E#66C91E

#66C91E is a light, highly saturated yellow-green. Relative luminance 0.447; OKLCH L 74.6% C 0.214 H 136.2°. Best body text is #000000 at 9.94:1 contrast (WCAG AA passes).

Color values

HEX	#66C91E
RGB	rgb(102, 201, 30)
HSL	hsl(95, 74%, 45%)
HSV	hsv(95, 85%, 79%)
CMYK	cmyk(49.3%, 0%, 85.1%, 21.2%)
CIE-LAB	lab(72.69, -55.22, 67.59)
CIE-LCH	lch(72.69, 87.28, 129.25°)
OKLab	oklab(74.63% -0.1541 0.1478)
OKLCH	oklch(74.63% 0.214 136.2)
XYZ	xyz(26.5997, 44.6900, 8.4524)
Luminance	0.4469 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66C91E #811EC9

analogous

#BBC91E #66C91E #1EC92C

triadic

#66C91E #1E66C9 #C91E66

tetradic

#66C91E #1EBBC9 #811EC9 #C92C1E

square

#66C91E #1EBBC9 #811EC9 #C92C1E

split-complementary

#66C91E #2C1EC9 #C91EBB

monochromatic

#305E0E #4B9416 #66C91E #85E341 #A8EB77

Accessibility & contrast

On white

2.11

#66C91E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

9.94

#66C91E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66C91E

9.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66C91E	#FFFFFF	#000000	##000000
##66C91E	1.00	2.11	9.94	9.94
#FFFFFF	2.11	1.00	21.00	21.00
#000000	9.94	21.00	1.00	1.00
##000000	9.94	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#D0B700

Deuteranopia (green-blind)

#C3AF35

Tritanopia (blue-blind)

#61C1AB

Achromatopsia (no color)

#B2B2B2

Design tokens & code

CSS

--color: #66c91e;
/* rgb */ color: rgb(102, 201, 30);
/* oklch */ color: oklch(74.6% 0.214 136.2);

Tailwind

colors: {
  custom: {
    50: '#9bda6c',
    500: '#66c91e',
    950: '#000000',
  },
}

SCSS

$custom: #66c91e;
$custom-light: #9bda6c;
$custom-dark: #000000;

JSON

{
  "hex": "#66c91e",
  "rgb": {
    "r": 102,
    "g": 201,
    "b": 30
  },
  "hsl": {
    "h": 94.737,
    "s": 74.026,
    "l": 45.294
  },
  "oklch": {
    "l": 0.74627,
    "c": 0.21351,
    "h": 136.2
  },
  "luminance": 0.44692
}

Semantic roles & 50–950 ramp

primary

#66C91E

secondary

#A971D2

accent

#37F1A3

background

#FAFDF7

surface

#F4FBED

border

#CED4C8

text

#0F1508

muted

#7F837B

Preview Lab

Preview with #66C91E

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

Preview Lab → · Contrast checker → · Palette generator →