#66D557#66D557

#66D557 is a light, vivid green. Relative luminance 0.511; OKLCH L 78.1% C 0.194 H 141.4°. Best body text is #000000 at 11.22:1 contrast (WCAG AA passes).

Color values

HEX	#66D557
RGB	rgb(102, 213, 87)
HSL	hsl(113, 60%, 59%)
HSV	hsv(113, 59%, 84%)
CMYK	cmyk(52.1%, 0%, 59.2%, 16.5%)
CIE-LAB	lab(76.74, -55.59, 51.69)
CIE-LCH	lch(76.74, 75.91, 137.08°)
OKLab	oklab(78.08% -0.1518 0.1214)
OKLCH	oklch(78.08% 0.194 141.4)
XYZ	xyz(30.9926, 51.0989, 17.2449)
Luminance	0.5110 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#66D557 #C657D5

analogous

#A5D557 #66D557 #57D587

triadic

#66D557 #5766D5 #D55766

tetradic

#66D557 #57A5D5 #C657D5 #D58757

square

#66D557 #57A5D5 #C657D5 #D58757

split-complementary

#66D557 #8757D5 #D557A5

monochromatic

#308E24 #41BF30 #66D557 #93E188 #BFEDB9

Accessibility & contrast

On white

1.87

#66D557 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

11.22

#66D557 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #66D557

11.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##66D557	#FFFFFF	#000000	##000000
##66D557	1.00	1.87	11.22	11.22
#FFFFFF	1.87	1.00	21.00	21.00
#000000	11.22	21.00	1.00	1.00
##000000	11.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#DAC34A

Deuteranopia (green-blind)

#CBBA61

Tritanopia (blue-blind)

#58CFBA

Achromatopsia (no color)

#BDBDBD

Design tokens & code

CSS

--color: #66d557;
/* rgb */ color: rgb(102, 213, 87);
/* oklch */ color: oklch(78.1% 0.194 141.4);

Tailwind

colors: {
  custom: {
    50: '#9be38a',
    500: '#66d557',
    950: '#000000',
  },
}

SCSS

$custom: #66d557;
$custom-light: #9be38a;
$custom-dark: #000000;

JSON

{
  "hex": "#66d557",
  "rgb": {
    "r": 102,
    "g": 213,
    "b": 87
  },
  "hsl": {
    "h": 112.857,
    "s": 60,
    "l": 58.824
  },
  "oklch": {
    "l": 0.78081,
    "c": 0.19439,
    "h": 141.4
  },
  "luminance": 0.51101
}

Semantic roles & 50–950 ramp

primary

#66D557

secondary

#893C94

accent

#45E3D0

background

#FCFEFC

surface

#F5FCF4

border

#CFD5CE

text

#0F150C

muted

#80847F

Preview Lab

Preview with #66D557

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

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