Palettes / Colors / #C4E109

#C4E109 — Vivid Yellow

#C4E109 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 #C4E109 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.

#C4E109 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 #2609E1; it also sits naturally between #E19209 and #59E109. 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 77% · Green 88% · Blue 4%

Cyan 13% · Magenta 0% · Yellow 96% · Key 12%

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

Previews

CSS code for #C4E109

.text { color: #C4E109; }
.background { background-color: #C4E109; }
.border { border: 3px solid #C4E109; }
.text-rgb { color: rgb(196, 225, 9); }
.text-hsl { color: hsl(68, 92%, 46%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #C4E109; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(196, 225, 9, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #C4E109; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(196, 225, 9, 0.8); }

HTML: <p style="color:#C4E109">Text here</p> · <div style="background-color:#C4E109">Div content here</div>

Shades of #C4E109

Tints of #C4E109

Tones of #C4E109

Color harmonies

Complementary — #2609E1:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #C4E109: #000000.

Semi-transparent (opacity) text on #C4E109

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 #C4E109 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 #C4E109 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

← #C4E108  ·  #C4E10A →

Frequently asked questions

What color is #C4E109?

#C4E109 is Vivid Yellow, a yellow color (RGB 196, 225, 9). Its closest standard named color is GreenYellow.

What is the RGB and HSL of #C4E109?

#C4E109 is RGB 196, 225, 9 — HSL 68°, 92%, 46% — CMYK 13%, 0%, 96%, 12%.

What colors go with #C4E109?

Its complement is #2609E1; analogous partners are #E19209 and #59E109. It also appears in 6+ palettes in our collection.

Can I use #C4E109 for text?

Black text on #C4E109 has a contrast ratio of 14.12:1 (passes WCAG AA); white text gives 1.49:1.