#66BB25#66BB25

#66BB25 is a light, vivid yellow-green. Relative luminance 0.385; OKLCH L 71.1% C 0.195 H 135.4°. Best body text is #000000 at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#66BB25
RGB	rgb(102, 187, 37)
HSL	hsl(94, 67%, 44%)
HSV	hsv(94, 80%, 73%)
CMYK	cmyk(45.5%, 0%, 80.2%, 26.7%)
CIE-LAB	lab(68.39, -49.54, 61.94)
CIE-LCH	lch(68.39, 79.32, 128.65°)
OKLab	oklab(71.1% -0.1386 0.1368)
OKLCH	oklch(71.1% 0.195 135.4)
XYZ	xyz(23.5832, 38.4975, 7.9380)
Luminance	0.3850 (WCAG relative)
Temperature	warm
Family	yellow-green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66BB25 #7A25BB

analogous

#B1BB25 #66BB25 #25BB2F

triadic

#66BB25 #2566BB #BB2566

tetradic

#66BB25 #25B1BB #7A25BB #BB2F25

square

#66BB25 #25B1BB #7A25BB #BB2F25

split-complementary

#66BB25 #2F25BB #BB25B1

monochromatic

#2E5511 #4A881B #66BB25 #85DA43 #A6E476

Accessibility & contrast

On white

2.41

#66BB25 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

8.70

#66BB25 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66BB25

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66BB25	#FFFFFF	#000000	##000000
##66BB25	1.00	2.41	8.70	8.70
#FFFFFF	2.41	1.00	21.00	21.00
#000000	8.70	21.00	1.00	1.00
##000000	8.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#C2AB00

Deuteranopia (green-blind)

#B7A437

Tritanopia (blue-blind)

#63B4A0

Achromatopsia (no color)

#A7A7A7

Design tokens & code

CSS

--color: #66bb25;
/* rgb */ color: rgb(102, 187, 37);
/* oklch */ color: oklch(71.1% 0.195 135.4);

Tailwind

colors: {
  custom: {
    50: '#99d06d',
    500: '#66bb25',
    950: '#000000',
  },
}

SCSS

$custom: #66bb25;
$custom-light: #99d06d;
$custom-dark: #000000;

JSON

{
  "hex": "#66bb25",
  "rgb": {
    "r": 102,
    "g": 187,
    "b": 37
  },
  "hsl": {
    "h": 94,
    "s": 66.964,
    "l": 43.922
  },
  "oklch": {
    "l": 0.71098,
    "c": 0.19473,
    "h": 135.4
  },
  "luminance": 0.38499
}

Semantic roles & 50–950 ramp

primary

#66BB25

secondary

#A470CB

accent

#3EEA9F

background

#F9FCF6

surface

#F2F9EC

border

#CCD2C7

text

#0F1408

muted

#7E827A

Preview Lab

Preview with #66BB25

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

Preview Lab → · Contrast checker → · Palette generator →