#66F591#66F591

#66F591 is a very light, vivid green. Relative luminance 0.702; OKLCH L 86.8% C 0.186 H 150.6°. Best body text is #000000 at 15.03:1 contrast (WCAG AA passes).

Color values

HEX	#66F591
RGB	rgb(102, 245, 145)
HSL	hsl(138, 88%, 68%)
HSV	hsv(138, 58%, 96%)
CMYK	cmyk(58.4%, 0%, 40.8%, 3.9%)
CIE-LAB	lab(87.08, -59.76, 36.85)
CIE-LCH	lch(87.08, 70.21, 148.34°)
OKLab	oklab(86.82% -0.1616 0.0912)
OKLCH	oklch(86.82% 0.186 150.6)
XYZ	xyz(43.2395, 70.1698, 38.0480)
Luminance	0.7017 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66F591 #F566CA

analogous

#82F566 #66F591 #66F5D8

triadic

#66F591 #9166F5 #F59166

tetradic

#66F591 #6682F5 #F566CA #F5D866

square

#66F591 #6682F5 #F566CA #F5D866

split-complementary

#66F591 #D866F5 #F56682

monochromatic

#0ED349 #2DF168 #66F591 #9FF9BA #D9FDE4

Accessibility & contrast

On white

1.40

#66F591 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.03

#66F591 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66F591

15.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66F591	#FFFFFF	#000000	##000000
##66F591	1.00	1.40	15.03	15.03
#FFFFFF	1.40	1.00	21.00	21.00
#000000	15.03	21.00	1.00	1.00
##000000	15.03	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#F6E28A

Deuteranopia (green-blind)

#E3D598

Tritanopia (blue-blind)

#3DF1DC

Achromatopsia (no color)

#DADADA

Design tokens & code

CSS

--color: #66f591;
/* rgb */ color: rgb(102, 245, 145);
/* oklch */ color: oklch(86.8% 0.186 150.6);

Tailwind

colors: {
  custom: {
    50: '#9df9b2',
    500: '#66f591',
    950: '#000000',
  },
}

SCSS

$custom: #66f591;
$custom-light: #9df9b2;
$custom-dark: #000000;

JSON

{
  "hex": "#66f591",
  "rgb": {
    "r": 102,
    "g": 245,
    "b": 145
  },
  "hsl": {
    "h": 138.042,
    "s": 87.73,
    "l": 68.039
  },
  "oklch": {
    "l": 0.86818,
    "c": 0.18562,
    "h": 150.6
  },
  "luminance": 0.70174
}

Semantic roles & 50–950 ramp

primary

#66F591

secondary

#CE319F

accent

#01A0E4

background

#FCFFFD

surface

#F6FFF8

border

#D0D7D1

text

#0F1711

muted

#808581

Preview Lab

Preview with #66F591

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

Preview Lab → · Contrast checker → · Palette generator →