#66E591#66E591

#66E591 is a very light, vivid green. Relative luminance 0.609; OKLCH L 82.9% C 0.164 H 152.2°. Best body text is #000000 at 13.18:1 contrast (WCAG AA passes).

Color values

HEX	#66E591
RGB	rgb(102, 229, 145)
HSL	hsl(140, 71%, 65%)
HSV	hsv(140, 55%, 90%)
CMYK	cmyk(55.5%, 0%, 36.7%, 10.2%)
CIE-LAB	lab(82.33, -53.53, 30.59)
CIE-LCH	lch(82.33, 61.66, 150.25°)
OKLab	oklab(82.92% -0.1452 0.0765)
OKLCH	oklch(82.92% 0.164 152.2)
XYZ	xyz(38.6067, 60.9043, 36.5038)
Luminance	0.6091 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66E591 #E566BA

analogous

#7AE566 #66E591 #66E5D1

triadic

#66E591 #9166E5 #E59166

tetradic

#66E591 #667AE5 #E566BA #E5D166

square

#66E591 #667AE5 #E566BA #E5D166

split-complementary

#66E591 #D166E5 #E5667A

monochromatic

#1EB250 #32DC6B #66E591 #9AEEB7 #CFF7DC

Accessibility & contrast

On white

1.59

#66E591 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

13.18

#66E591 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66E591

13.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66E591	#FFFFFF	#000000	##000000
##66E591	1.00	1.59	13.18	13.18
#FFFFFF	1.59	1.00	21.00	21.00
#000000	13.18	21.00	1.00	1.00
##000000	13.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E5D48B

Deuteranopia (green-blind)

#D4C896

Tritanopia (blue-blind)

#43E2D0

Achromatopsia (no color)

#CDCDCD

Design tokens & code

CSS

--color: #66e591;
/* rgb */ color: rgb(102, 229, 145);
/* oklch */ color: oklch(82.9% 0.164 152.2);

Tailwind

colors: {
  custom: {
    50: '#9beeb2',
    500: '#66e591',
    950: '#000000',
  },
}

SCSS

$custom: #66e591;
$custom-light: #9beeb2;
$custom-dark: #000000;

JSON

{
  "hex": "#66e591",
  "rgb": {
    "r": 102,
    "g": 229,
    "b": 145
  },
  "hsl": {
    "h": 140.315,
    "s": 70.95,
    "l": 64.902
  },
  "oklch": {
    "l": 0.82919,
    "c": 0.1641,
    "h": 152.2
  },
  "luminance": 0.60908
}

Semantic roles & 50–950 ramp

primary

#66E591

secondary

#B33C8B

accent

#1392D3

background

#FCFFFD

surface

#F5FEF7

border

#CFD6D0

text

#0F1611

muted

#808581

Preview Lab

Preview with #66E591

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

Preview Lab → · Contrast checker → · Palette generator →