Palettes / Colors / #CDEE18

#CDEE18 — Vivid Yellow

#CDEE18 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 #CDEE18 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.

#CDEE18 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 #3717EE; it also sits naturally between #EEA217 and #62EE17. 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 80% · Green 93% · Blue 9%

Cyan 14% · Magenta 0% · Yellow 90% · Key 7%

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

Previews

CSS code for #CDEE18

.text { color: #CDEE18; }
.background { background-color: #CDEE18; }
.border { border: 3px solid #CDEE18; }
.text-rgb { color: rgb(205, 238, 24); }
.text-hsl { color: hsl(69, 86%, 51%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #CDEE18; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(205, 238, 24, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #CDEE18; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(205, 238, 24, 0.8); }

HTML: <p style="color:#CDEE18">Text here</p> · <div style="background-color:#CDEE18">Div content here</div>

Shades of #CDEE18

Tints of #CDEE18

Tones of #CDEE18

Color harmonies

Complementary — #3717EE:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #CDEE18: #000000.

Semi-transparent (opacity) text on #CDEE18

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 #CDEE18 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 #CDEE18 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

← #CDEE17  ·  #CDEE19 →

Frequently asked questions

What color is #CDEE18?

#CDEE18 is Vivid Yellow, a yellow color (RGB 205, 238, 24). Its closest standard named color is GreenYellow.

What is the RGB and HSL of #CDEE18?

#CDEE18 is RGB 205, 238, 24 — HSL 69°, 86%, 51% — CMYK 14%, 0%, 90%, 7%.

What colors go with #CDEE18?

Its complement is #3717EE; analogous partners are #EEA217 and #62EE17. It also appears in 6+ palettes in our collection.

Can I use #CDEE18 for text?

Black text on #CDEE18 has a contrast ratio of 15.84:1 (passes WCAG AA); white text gives 1.33:1.