Palettes / Colors / #F03437

#F03437 — Vivid Red

#F03437 is a red color we call Vivid Red, closest to the named color Crimson (#DC143C). It belongs to the red family.

Color name

Closest CSS keyword: crimson (#DC143C) — not an exact match. CSS crimson gives you #DC143C, a different color; use #F03437 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.

#F03437 is a warm red color associated with energy, passion and urgency. 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 #33F0ED; it also sits naturally between #F03394 and #F08E33. 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 94% · Green 20% · Blue 22%

Cyan 0% · Magenta 78% · Yellow 77% · Key 6%

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

Previews

CSS code for #F03437

.text { color: #F03437; }
.background { background-color: #F03437; }
.border { border: 3px solid #F03437; }
.text-rgb { color: rgb(240, 52, 55); }
.text-hsl { color: hsl(359, 86%, 57%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #F03437; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(240, 52, 55, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #F03437; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(240, 52, 55, 0.8); }

HTML: <p style="color:#F03437">Text here</p> · <div style="background-color:#F03437">Div content here</div>

Shades of #F03437

Tints of #F03437

Tones of #F03437

Color harmonies

Complementary — #33F0ED:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #F03437: #000000.

Semi-transparent (opacity) text on #F03437

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 #F03437 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 #F03437 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

← #F03436  ·  #F03438 →

Frequently asked questions

What color is #F03437?

#F03437 is Vivid Red, a red color (RGB 240, 52, 55). Its closest standard named color is Crimson.

What is the RGB and HSL of #F03437?

#F03437 is RGB 240, 52, 55 — HSL 359°, 86%, 57% — CMYK 0%, 78%, 77%, 6%.

What colors go with #F03437?

Its complement is #33F0ED; analogous partners are #F03394 and #F08E33. It also appears in 6+ palettes in our collection.

Can I use #F03437 for text?

Black text on #F03437 has a contrast ratio of 5.25:1 (passes WCAG AA); white text gives 4.00:1.