#42E579#42E579

#42E579 is a light, vivid green. Relative luminance 0.586; OKLCH L 81.5% C 0.200 H 150.2°. Best body text is #000000 at 12.72:1 contrast (WCAG AA passes).

Color values

HEX	#42E579
RGB	rgb(66, 229, 121)
HSL	hsl(140, 76%, 58%)
HSV	hsv(140, 71%, 90%)
CMYK	cmyk(71.2%, 0%, 47.2%, 10.2%)
CIE-LAB	lab(81.06, -64.41, 40.74)
CIE-LCH	lch(81.06, 76.21, 147.68°)
OKLab	oklab(81.5% -0.1733 0.0995)
OKLCH	oklch(81.5% 0.2 150.2)
XYZ	xyz(33.7145, 58.5735, 27.6144)
Luminance	0.5858 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42E579 #E542AE

analogous

#5DE542 #42E579 #42E5CA

triadic

#42E579 #7942E5 #E57942

tetradic

#42E579 #425DE5 #E542AE #E5CA42

square

#42E579 #425DE5 #E542AE #E5CA42

split-complementary

#42E579 #CA42E5 #E5425D

monochromatic

#159841 #1CCE58 #42E579 #78EC9F #AEF4C5

Accessibility & contrast

On white

1.65

#42E579 on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

12.72

#42E579 on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42E579

12.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42E579	#FFFFFF	#000000	##000000
##42E579	1.00	1.65	12.72	12.72
#FFFFFF	1.65	1.00	21.00	21.00
#000000	12.72	21.00	1.00	1.00
##000000	12.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#E6D270

Deuteranopia (green-blind)

#D3C481

Tritanopia (blue-blind)

#00E1CB

Achromatopsia (no color)

#C9C9C9

Design tokens & code

CSS

--color: #42e579;
/* rgb */ color: rgb(66, 229, 121);
/* oklch */ color: oklch(81.5% 0.200 150.2);

Tailwind

colors: {
  custom: {
    50: '#8beea1',
    500: '#42e579',
    950: '#000000',
  },
}

SCSS

$custom: #42e579;
$custom-light: #8beea1;
$custom-dark: #000000;

JSON

{
  "hex": "#42e579",
  "rgb": {
    "r": 66,
    "g": 229,
    "b": 121
  },
  "hsl": {
    "h": 140.245,
    "s": 75.814,
    "l": 57.843
  },
  "oklch": {
    "l": 0.81497,
    "c": 0.19982,
    "h": 150.2
  },
  "luminance": 0.58577
}

Semantic roles & 50–950 ramp

primary

#42E579

secondary

#9C3077

accent

#35B3F2

background

#FCFFFC

surface

#F5FEF5

border

#CFD6CF

text

#0E170F

muted

#7F8580

Preview Lab

Preview with #42E579

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

Preview Lab → · Contrast checker → · Palette generator →