Palettes / Colors / #66EA56
#66EA56 — Vivid Green
#66EA56 is a green color we call Vivid Green, closest to the named color YellowGreen (#9ACD32). It belongs to the green family.
Color name
Closest CSS keyword: yellowgreen (#9ACD32) — not an exact match. CSS yellowgreen gives you #9ACD32, a different color; use #66EA56 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.
#66EA56 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 #DC57EA; it also sits naturally between #AFEA57 and #57EA92. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #66EA56 |
|---|---|
| RGB | 102, 234, 86 |
| HSL | 114°, 78%, 63% |
| HSV | 114°, 63%, 92% |
| CMYK | 56%, 0%, 63%, 8% |
| XYZ | 36.58, 62.34, 18.91 |
| Yxy | 62.34, 0.3105, 0.5291 |
| CIE-Lab | 83.10, -63.43, 59.27 |
| Hunter Lab | 78.96, -52.07, 38.19 |
RGB & CMYK percentages
Red 40% · Green 92% · Blue 34%
Cyan 56% · Magenta 0% · Yellow 63% · Key 8%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
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CSS code for #66EA56
.text { color: #66EA56; }
.background { background-color: #66EA56; }
.border { border: 3px solid #66EA56; }
.text-rgb { color: rgb(102, 234, 86); }
.text-hsl { color: hsl(114, 78%, 63%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #66EA56; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(102, 234, 86, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #66EA56; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(102, 234, 86, 0.8); }
HTML: <p style="color:#66EA56">Text here</p> · <div style="background-color:#66EA56">Div content here</div>
Shades of #66EA56
Tints of #66EA56
Tones of #66EA56
Color harmonies
Complementary — #DC57EA:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 1.56:1 Fails |
|---|---|
| Against black text | 13.47:1 AAA |
Best text color on #66EA56: #000000.
Semi-transparent (opacity) text on #66EA56
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:
Smaller body text shows the effect best.
Blended color: · Contrast against #66EA56: ·
How #66EA56 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 #66EA56 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
Frequently asked questions
What color is #66EA56?
#66EA56 is Vivid Green, a green color (RGB 102, 234, 86). Its closest standard named color is YellowGreen.
What is the RGB and HSL of #66EA56?
#66EA56 is RGB 102, 234, 86 — HSL 114°, 78%, 63% — CMYK 56%, 0%, 63%, 8%.
What colors go with #66EA56?
Its complement is #DC57EA; analogous partners are #AFEA57 and #57EA92. It also appears in 6+ palettes in our collection.
Can I use #66EA56 for text?
Black text on #66EA56 has a contrast ratio of 13.47:1 (passes WCAG AA); white text gives 1.56:1.