#42FF4E#42FF4E

#42FF4E is a very light, highly saturated green. Relative luminance 0.732; OKLCH L 87.6% C 0.262 H 143.7°. Best body text is #000000 at 15.65:1 contrast (WCAG AA passes).

Color values

HEX	#42FF4E
RGB	rgb(66, 255, 78)
HSL	hsl(124, 100%, 63%)
HSV	hsv(124, 74%, 100%)
CMYK	cmyk(74.1%, 0%, 69.4%, 0%)
CIE-LAB	lab(88.55, -77.92, 67.99)
CIE-LCH	lch(88.55, 103.41, 138.89°)
OKLab	oklab(87.57% -0.211 0.1552)
OKLCH	oklch(87.57% 0.262 143.7)
XYZ	xyz(39.3794, 73.2237, 19.2645)
Luminance	0.7323 (WCAG relative)
Temperature	neutral
Family	green

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#42FF4E #FF42F3

analogous

#94FF42 #42FF4E #42FFAD

triadic

#42FF4E #4E42FF #FF4E42

tetradic

#42FF4E #4294FF #FF42F3 #FFAD42

square

#42FF4E #4294FF #FF42F3 #FFAD42

split-complementary

#42FF4E #AD42FF #FF4294

monochromatic

#00C70D #05FF15 #42FF4E #7FFF87 #BCFFC1

Accessibility & contrast

On white

1.34

#42FF4E on #FFFFFF

AA ✗AA large ✗AAA ✗

On black

15.65

#42FF4E on #000000

AA ✓AA large ✓AAA ✓

Best text color

#000000 on #42FF4E

15.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##42FF4E	#FFFFFF	#000000	##000000
##42FF4E	1.00	1.34	15.65	15.65
#FFFFFF	1.34	1.00	21.00	21.00
#000000	15.65	21.00	1.00	1.00
##000000	15.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#FFE732

Deuteranopia (green-blind)

#EFD960

Tritanopia (blue-blind)

#00F8DC

Achromatopsia (no color)

#DEDEDE

Design tokens & code

CSS

--color: #42ff4e;
/* rgb */ color: rgb(66, 255, 78);
/* oklch */ color: oklch(87.6% 0.262 143.7);

Tailwind

colors: {
  custom: {
    50: '#92ff88',
    500: '#42ff4e',
    950: '#000000',
  },
}

SCSS

$custom: #42ff4e;
$custom-light: #92ff88;
$custom-dark: #000000;

JSON

{
  "hex": "#42ff4e",
  "rgb": {
    "r": 66,
    "g": 255,
    "b": 78
  },
  "hsl": {
    "h": 123.81,
    "s": 100,
    "l": 62.941
  },
  "oklch": {
    "l": 0.87572,
    "c": 0.26191,
    "h": 143.7
  },
  "luminance": 0.73228
}

Semantic roles & 50–950 ramp

primary

#42FF4E

secondary

#C322B9

accent

#00D7E6

background

#FCFFFC

surface

#F5FFF4

border

#CFD7CE

text

#0F180C

muted

#80867F

Preview Lab

Preview with #42FF4E

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

Preview Lab → · Contrast checker → · Palette generator →