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Strong Red Color

HEX #EF0307 / RGB (239, 3, 7)

What is Strong Red Color?

Strong Red (Hex code: EF0307) Thumbnail

Strong Red has the hex code #EF0307. The equivalent RGB values are (239, 3, 7), which means it is composed of 96% red, 1% green and 3% blue. The CMYK color codes, used in printers, are C:0 M:99 Y:97 K:6. In the HSV/HSB scale, Strong Red has a hue of 359°, 99% saturation and a brightness value of 94%.
Details of other color codes including equivalent web safe and HTML & CSS colors are given in the table below. Also listed are the closest Pantone® (PMS) and RAL colors.

Strong Red is not part of the web colors list and, therefore, cannot be used by name in HTML and CSS code. The best way to apply the color to a web page is to put in its hex, RGB or HSL values. Please also note that the Strong Red CMYK numbers mentioned on this page are only approximations and have been calculated from the hex code using well-known formulae.

Download Strong Red Solid Color Background

Strong Red Color Codes

Hex Code#EF0307
RGB Values(239, 3, 7)
CMYK Values(0%, 99%, 97%, 6%)
HSV/HSB Values(359°, 99%, 94%)
Closest Web Safe#FF0000
Inverse Color#10FCF8 [Fluorescent Blue]
Closest Pantone®2347 C
Closest RAL3026 [Luminous bright red]
Complementary Color#03EFEB [Bright Turquoise]
Strong Red Converted to Grayscale Codes
Simple Average#535353
Weighted Average (Most Common)#4A4A4A
Weighted Average (Luma)#353535
Weighted Average (Gamma Adjusted)#7A7A7A

Strong Red Color Palettes

Complementary color palette of EF0307. Complementary color is 03EFEB

Complementary Palette

The complement of Strong Red is Bright Turquoise with the hex code #03EFEB. Complementary colors are those found at the opposite ends of the color wheel. Thus, as per the RGB system, the best contrast to #EF0307 color is offered by #03EFEB. The complementary color palette is easiest to use and work with. Studies have shown that contrasting color palette is the best way to grab a viewer's attention.

EF0307 03EFEB
Analogous color palette with (EF0307, EF7503 and EF037D)

Analogous Palette

The analogous colors of Strong Red (#EF0307) are University Of Tennessee Orange (#EF7503) and Mexican Pink (#EF037D). In the RGB color wheel, these two analogous colors occur to the right and left of Strong Red with a 30° separation on either side. An analogous color palette is extremely soothing to the eyes and works wonders if your main color is soft or pastel.

EF0307 EF7503 EF037D
Split Complementary color palette with (EF0307, 03EF75 and 037DEF)

Split-Complementary Palette

As per the RGB color wheel, the split-complementary colors of Strong Red (#EF0307) are #03EF75 (Guppie Green) and #037DEF (Azure). A split-complementary color palette consists of the main color along with those on either side (30°) of the complementary color. Based on our research, usage of split-complementary palettes is on the rise online, especially in graphics and web sites designs. It may be because it is not as contrasting as the complementary color palette and, hence, results in a combination which is pleasant to the eyes.

EF0307 03EF75 037DEF
Triadic color palette with (EF0307, 07EF03 and 0307EF)

Triadic Palette

Strong Red triadic color palette has three colors each of which is separated by 120° in the RGB wheel. Thus, #07EF03 (Electric Green) and #0307EF (Blue) along with #EF0307 create a stunning and beautiful triadic palette with the maximum variation in hue and, therefore, offering the best possible contrast when taken together.

EF0307 07EF03 0307EF
Tetradic color palette with (EF0307, 07EF03, 03EFEB and EB03EF)

Tetradic Palette

The tetradic palette of Strong Red has four colors - #07EF03 (Electric Green), #03EFEB (Bright Turquoise) and #EB03EF (Phlox) in addition to the base color (#EF0307). A tetradic color palette is complex and, in most cases, should not be used off-the-shelf. We suggest tweaking the colors slightly to achieve desired results.

EF0307 07EF03 03EFEB EB03EF
Square color palette with (EF0307, 7DEF03, 03EFEB and 7503EF)

Square Palette

Strong Red square color palette has #7DEF03 (Lawn Green), #03EFEB (Bright Turquoise) and #7503EF (Electric Indigo). Quite like triadic, the hues in a square palette are at the maximum distance from each other, which is 90°.
Note: For several colors purposes, a square palette may look much better than the tetrad color palette.

EF0307 7DEF03 03EFEB 7503EF
Rainbow color

Strong Red Color Rainbow Palette

Our Strong Red rainbow color palette is based on the RGB model and consists of 7 colors, just like the traditional rainbow. You might not see a lot of variation in color, especially if the chosen color is dark or extremely light. However, this can lead interesting rainbow palettes that are faded, soft, pastel or dull.

EF0307 EFC903 4AEF03 03EF86 038EEF 4203EF EF03D1

Tints, Tones & Shades of Strong Red Color


  • Transparent F23539F23539
  • Transparent F44F51F44F51
  • Transparent F5686AF5686A
  • Transparent F78183F78183
  • Transparent F99A9CF99A9C
  • Transparent FAB3B5FAB3B5
  • Transparent FCCDCDFCCDCD
  • Transparent FDE6E6FDE6E6


  • Transparent D91C1FD91C1F
  • Transparent CE292BCE292B
  • Transparent C33537C33537
  • Transparent B84244B84244
  • Transparent AC4E50AC4E50
  • Transparent A15B5CA15B5C
  • Transparent 966768966768
  • Transparent 8B74748B7474


  • Transparent BF0206BF0206
  • Transparent A70205A70205
  • Transparent 8F02048F0204
  • Transparent 780204780204
  • Transparent 600103600103
  • Transparent 480102480102
  • Transparent 300101300101
  • Transparent 180001180001

Strong Red Color Patterns

  • Transparent

    Strong Red Gingham Checks

  • Transparent

    Strong Red Vertical Stripes Pattern

  • Transparent

    Strong Red Polka Dots Pattern

  • Transparent

    Strong Red Honeycomb Pattern

  • Transparent

    Strong Red Leaves Pattern

  • Transparent

    Strong Red Houndstooth Pattern

  • Transparent

    Strong Red Trellis Pattern

  • Transparent

    Strong Red Plaid Pattern

Strong Red Color Interior Ideas

Pretty Photo frame on Strong Red color drawing room interior textured wall

Strong Red Color Drawing Room Textured Wall Paint Idea

Pretty Photo frame on Strong Red color Living room wal color

Strong Red Color Living Room Wall Paint Idea

Pretty Photo frame on Strong Red color Bedroom interior wall color

Strong Red Color Bedroom Wall Paint Idea

Pretty Photo frame on Strong Red color kitchen interior wall color

Strong Red Color Kitchen Wall Paint Idea