Palettes / Colors / #DEEF3F

#DEEF3F — Vivid Yellow

#DEEF3F is a yellow color we call Vivid Yellow, closest to the named color GreenYellow (#ADFF2F). It belongs to the yellow family.

Color name

Closest CSS keyword: greenyellow (#ADFF2F) — not an exact match. CSS greenyellow gives you #ADFF2F, a different color; use #DEEF3F 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.

#DEEF3F is a warm yellow color associated with optimism, attention and cheer. 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 #4F3EEF; it also sits naturally between #EFA83E and #85EF3E. 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 87% · Green 94% · Blue 25%

Cyan 7% · Magenta 0% · Yellow 74% · Key 6%

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

Previews

CSS code for #DEEF3F

.text { color: #DEEF3F; }
.background { background-color: #DEEF3F; }
.border { border: 3px solid #DEEF3F; }
.text-rgb { color: rgb(222, 239, 63); }
.text-hsl { color: hsl(66, 85%, 59%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #DEEF3F; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(222, 239, 63, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #DEEF3F; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(222, 239, 63, 0.8); }

HTML: <p style="color:#DEEF3F">Text here</p> · <div style="background-color:#DEEF3F">Div content here</div>

Shades of #DEEF3F

Tints of #DEEF3F

Tones of #DEEF3F

Color harmonies

Complementary — #4F3EEF:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #DEEF3F: #000000.

Semi-transparent (opacity) text on #DEEF3F

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 #DEEF3F 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 #DEEF3F 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

← #DEEF3E  ·  #DEEF40 →

Frequently asked questions

What color is #DEEF3F?

#DEEF3F is Vivid Yellow, a yellow color (RGB 222, 239, 63). Its closest standard named color is GreenYellow.

What is the RGB and HSL of #DEEF3F?

#DEEF3F is RGB 222, 239, 63 — HSL 66°, 85%, 59% — CMYK 7%, 0%, 74%, 6%.

What colors go with #DEEF3F?

Its complement is #4F3EEF; analogous partners are #EFA83E and #85EF3E. It also appears in 6+ palettes in our collection.

Can I use #DEEF3F for text?

Black text on #DEEF3F has a contrast ratio of 16.52:1 (passes WCAG AA); white text gives 1.27:1.