Palettes / Colors / #42E401

#42E401 — Vivid Green

#42E401 is a green color we call Vivid Green, closest to the named color LawnGreen (#7CFC00). It belongs to the green family.

Color name

Closest CSS keyword: lawngreen (#7CFC00) — not an exact match. CSS lawngreen gives you #7CFC00, a different color; use #42E401 when you need this exact shade.

Sources: common names follow widely used color-name references; CSS keywords and their hex values follow the CSS Color specification.

#42E401 is a warm-leaning green color associated with growth, calm and balance. It is saturated enough to be the accent — buttons, highlights and calls to action — while neutrals do the quiet work around it.

Its strongest partner is its complement #A401E4; it also sits naturally between #B3E401 and #01E432. In the palettes below you can see it working alongside real color combinations from our collection.

Copy HEX Copy RGB Copy HSL Download PNG swatch SVG

Color values

RGB & CMYK percentages

Red 26% · Green 89% · Blue 0%

Cyan 71% · Magenta 0% · Yellow 100% · Key 11%

CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.

Previews

CSS code for #42E401

.text { color: #42E401; }
.background { background-color: #42E401; }
.border { border: 3px solid #42E401; }
.text-rgb { color: rgb(66, 228, 1); }
.text-hsl { color: hsl(103, 99%, 45%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #42E401; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(66, 228, 1, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #42E401; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(66, 228, 1, 0.8); }

HTML: <p style="color:#42E401">Text here</p> · <div style="background-color:#42E401">Div content here</div>

Shades of #42E401

Tints of #42E401

Tones of #42E401

Color harmonies

Complementary — #A401E4:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #42E401: #000000.

Semi-transparent (opacity) text on #42E401

Text set with opacity blends into the background, so its real contrast is lower than the solid ratios above. Choose a text color and an opacity to see the blended color and its true ratio:

How #42E401 looks with color blindness

Simulated with standard Machado color-vision-deficiency matrices — useful when this color carries meaning in charts, maps or interfaces:

Closest design-system colors

The nearest matches in the Tailwind CSS, Material Design and Bootstrap palettes — handy when you need a framework class instead of a raw hex:

Palettes with a similar color

These palettes use a close neighbour of #42E401 rather than the exact color:

Similar colors

The closest colors that actually appear in our palette collection — click any to open its page:

Browse neighbouring colors

← #42E400  ·  #42E402 →

Frequently asked questions

What color is #42E401?

#42E401 is Vivid Green, a green color (RGB 66, 228, 1). Its closest standard named color is LawnGreen.

What is the RGB and HSL of #42E401?

#42E401 is RGB 66, 228, 1 — HSL 103°, 99%, 45% — CMYK 71%, 0%, 100%, 11%.

What colors go with #42E401?

Its complement is #A401E4; analogous partners are #B3E401 and #01E432. It also appears in 6+ palettes in our collection.

Can I use #42E401 for text?

Black text on #42E401 has a contrast ratio of 12.33:1 (passes WCAG AA); white text gives 1.70:1.