Palettes / Colors / #CDFD21

#CDFD21 — Vivid Green

#CDFD21 is a green color we call Vivid Green, closest to the named color GreenYellow (#ADFF2F). It belongs to the green family.

Color name

Closest CSS keyword: greenyellow (#ADFF2F) — not an exact match. CSS greenyellow gives you #ADFF2F, a different color; use #CDFD21 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.

#CDFD21 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 #5021FD; it also sits naturally between #FDBE21 and #5FFD21. 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 80% · Green 99% · Blue 13%

Cyan 19% · Magenta 0% · Yellow 87% · Key 1%

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

Previews

CSS code for #CDFD21

.text { color: #CDFD21; }
.background { background-color: #CDFD21; }
.border { border: 3px solid #CDFD21; }
.text-rgb { color: rgb(205, 253, 33); }
.text-hsl { color: hsl(73, 98%, 56%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #CDFD21; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(205, 253, 33, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #CDFD21; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(205, 253, 33, 0.8); }

HTML: <p style="color:#CDFD21">Text here</p> · <div style="background-color:#CDFD21">Div content here</div>

Shades of #CDFD21

Tints of #CDFD21

Tones of #CDFD21

Color harmonies

Complementary — #5021FD:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #CDFD21: #000000.

Semi-transparent (opacity) text on #CDFD21

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 #CDFD21 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 #CDFD21 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

← #CDFD20  ·  #CDFD22 →

Frequently asked questions

What color is #CDFD21?

#CDFD21 is Vivid Green, a green color (RGB 205, 253, 33). Its closest standard named color is GreenYellow.

What is the RGB and HSL of #CDFD21?

#CDFD21 is RGB 205, 253, 33 — HSL 73°, 98%, 56% — CMYK 19%, 0%, 87%, 1%.

What colors go with #CDFD21?

Its complement is #5021FD; analogous partners are #FDBE21 and #5FFD21. It also appears in 6+ palettes in our collection.

Can I use #CDFD21 for text?

Black text on #CDFD21 has a contrast ratio of 17.67:1 (passes WCAG AA); white text gives 1.19:1.