Palettes / Colors / #51EC91

#51EC91 — Vivid Green

#51EC91 is a green color we call Vivid Green, closest to the named color LightGreen (#90EE90). It belongs to the green family.

Color name

Closest CSS keyword: lightgreen (#90EE90) — not an exact match. CSS lightgreen gives you #90EE90, a different color; use #51EC91 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.

#51EC91 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 #EC51AB; it also sits naturally between #5DEC51 and #51ECDF. In the palettes below you can see it working alongside real color combinations from our collection.

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Color values

RGB & CMYK percentages

Red 32% · Green 93% · Blue 57%

Cyan 66% · Magenta 0% · Yellow 39% · Key 7%

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

Previews

CSS code for #51EC91

.text { color: #51EC91; }
.background { background-color: #51EC91; }
.border { border: 3px solid #51EC91; }
.text-rgb { color: rgb(81, 236, 145); }
.text-hsl { color: hsl(145, 80%, 62%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #51EC91; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(81, 236, 145, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #51EC91; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(81, 236, 145, 0.8); }

HTML: <p style="color:#51EC91">Text here</p> · <div style="background-color:#51EC91">Div content here</div>

Shades of #51EC91

Tints of #51EC91

Tones of #51EC91

Color harmonies

Complementary — #EC51AB:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #51EC91: #000000.

Semi-transparent (opacity) text on #51EC91

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 #51EC91 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 #51EC91 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

← #51EC90  ·  #51EC92 →

Frequently asked questions

What color is #51EC91?

#51EC91 is Vivid Green, a green color (RGB 81, 236, 145). Its closest standard named color is LightGreen.

What is the RGB and HSL of #51EC91?

#51EC91 is RGB 81, 236, 145 — HSL 145°, 80%, 62% — CMYK 66%, 0%, 39%, 7%.

What colors go with #51EC91?

Its complement is #EC51AB; analogous partners are #5DEC51 and #51ECDF. It also appears in 6+ palettes in our collection.

Can I use #51EC91 for text?

Black text on #51EC91 has a contrast ratio of 13.76:1 (passes WCAG AA); white text gives 1.53:1.