Palettes / Colors / #EFEC2B

#EFEC2B — Vivid Yellow

#EFEC2B is a yellow color we call Vivid Yellow, closest to the named color Yellow (#FFFF00). It belongs to the yellow family.

Color name

Closest CSS keyword: yellow (#FFFF00) — not an exact match. CSS yellow gives you #FFFF00, a different color; use #EFEC2B 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.

#EFEC2B 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 #2A2DEF; it also sits naturally between #EF892A and #90EF2A. 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 93% · Blue 17%

Cyan 0% · Magenta 1% · Yellow 82% · Key 6%

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

Previews

CSS code for #EFEC2B

.text { color: #EFEC2B; }
.background { background-color: #EFEC2B; }
.border { border: 3px solid #EFEC2B; }
.text-rgb { color: rgb(239, 236, 43); }
.text-hsl { color: hsl(59, 86%, 55%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #EFEC2B; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(239, 236, 43, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #EFEC2B; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(239, 236, 43, 0.8); }

HTML: <p style="color:#EFEC2B">Text here</p> · <div style="background-color:#EFEC2B">Div content here</div>

Shades of #EFEC2B

Tints of #EFEC2B

Tones of #EFEC2B

Color harmonies

Complementary — #2A2DEF:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #EFEC2B: #000000.

Semi-transparent (opacity) text on #EFEC2B

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 #EFEC2B 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 #EFEC2B 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

← #EFEC2A  ·  #EFEC2C →

Frequently asked questions

What color is #EFEC2B?

#EFEC2B is Vivid Yellow, a yellow color (RGB 239, 236, 43). Its closest standard named color is Yellow.

What is the RGB and HSL of #EFEC2B?

#EFEC2B is RGB 239, 236, 43 — HSL 59°, 86%, 55% — CMYK 0%, 1%, 82%, 6%.

What colors go with #EFEC2B?

Its complement is #2A2DEF; analogous partners are #EF892A and #90EF2A. It also appears in 6+ palettes in our collection.

Can I use #EFEC2B for text?

Black text on #EFEC2B has a contrast ratio of 16.70:1 (passes WCAG AA); white text gives 1.26:1.