Palettes / Colors / #EF643F

#EF643F — Vivid Orange

#EF643F is a orange color we call Vivid Orange, closest to the named color Tomato (#FF6347). It belongs to the orange family.

Color name

Closest CSS keyword: tomato (#FF6347) — not an exact match. CSS tomato gives you #FF6347, a different color; use #EF643F 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.

#EF643F is a warm orange color associated with warmth, appetite and friendliness. 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 #3EC9EF; it also sits naturally between #EF3E70 and #EFBD3E. 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 39% · Blue 25%

Cyan 0% · Magenta 58% · Yellow 74% · Key 6%

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

Previews

CSS code for #EF643F

.text { color: #EF643F; }
.background { background-color: #EF643F; }
.border { border: 3px solid #EF643F; }
.text-rgb { color: rgb(239, 100, 63); }
.text-hsl { color: hsl(13, 85%, 59%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #EF643F; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(239, 100, 63, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #EF643F; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(239, 100, 63, 0.8); }

HTML: <p style="color:#EF643F">Text here</p> · <div style="background-color:#EF643F">Div content here</div>

Shades of #EF643F

Tints of #EF643F

Tones of #EF643F

Color harmonies

Complementary — #3EC9EF:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #EF643F: #000000.

Semi-transparent (opacity) text on #EF643F

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 #EF643F 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 #EF643F 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

← #EF643E  ·  #EF6440 →

Frequently asked questions

What color is #EF643F?

#EF643F is Vivid Orange, a orange color (RGB 239, 100, 63). Its closest standard named color is Tomato.

What is the RGB and HSL of #EF643F?

#EF643F is RGB 239, 100, 63 — HSL 13°, 85%, 59% — CMYK 0%, 58%, 74%, 6%.

What colors go with #EF643F?

Its complement is #3EC9EF; analogous partners are #EF3E70 and #EFBD3E. It also appears in 6+ palettes in our collection.

Can I use #EF643F for text?

Black text on #EF643F has a contrast ratio of 6.56:1 (passes WCAG AA); white text gives 3.20:1.