Palettes / Colors / #EFF445

#EFF445 — Vivid Yellow

#EFF445 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 #EFF445 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.

#EFF445 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 #4943F4; it also sits naturally between #F4A143 and #96F443. 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 94% · Green 96% · Blue 27%

Cyan 2% · Magenta 0% · Yellow 72% · Key 4%

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

Previews

CSS code for #EFF445

.text { color: #EFF445; }
.background { background-color: #EFF445; }
.border { border: 3px solid #EFF445; }
.text-rgb { color: rgb(239, 244, 69); }
.text-hsl { color: hsl(62, 89%, 61%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #EFF445; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(239, 244, 69, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #EFF445; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(239, 244, 69, 0.8); }

HTML: <p style="color:#EFF445">Text here</p> · <div style="background-color:#EFF445">Div content here</div>

Shades of #EFF445

Tints of #EFF445

Tones of #EFF445

Color harmonies

Complementary — #4943F4:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #EFF445: #000000.

Semi-transparent (opacity) text on #EFF445

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 #EFF445 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 #EFF445 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

← #EFF444  ·  #EFF446 →

Frequently asked questions

What color is #EFF445?

#EFF445 is Vivid Yellow, a yellow color (RGB 239, 244, 69). Its closest standard named color is GreenYellow.

What is the RGB and HSL of #EFF445?

#EFF445 is RGB 239, 244, 69 — HSL 62°, 89%, 61% — CMYK 2%, 0%, 72%, 4%.

What colors go with #EFF445?

Its complement is #4943F4; analogous partners are #F4A143 and #96F443. It also appears in 6+ palettes in our collection.

Can I use #EFF445 for text?

Black text on #EFF445 has a contrast ratio of 17.70:1 (passes WCAG AA); white text gives 1.19:1.