Palettes / Colors / #3333CB

#3333CB — Blue

#3333CB is a blue color we call Blue, closest to the named color RoyalBlue (#4169E1). It belongs to the blue family.

Color name

Closest CSS keyword: royalblue (#4169E1) — not an exact match. CSS royalblue gives you #4169E1, a different color; use #3333CB 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.

#3333CB is a cool blue color associated with trust, calm and professionalism. 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 #CCCC33; it also sits naturally between #3380CC and #8033CC. 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 20% · Green 20% · Blue 80%

Cyan 75% · Magenta 75% · Yellow 0% · Key 20%

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

Previews

CSS code for #3333CB

.text { color: #3333CB; }
.background { background-color: #3333CB; }
.border { border: 3px solid #3333CB; }
.text-rgb { color: rgb(51, 51, 203); }
.text-hsl { color: hsl(240, 60%, 50%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #3333CB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(51, 51, 203, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #3333CB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(51, 51, 203, 0.8); }

HTML: <p style="color:#3333CB">Text here</p> · <div style="background-color:#3333CB">Div content here</div>

Shades of #3333CB

Tints of #3333CB

Tones of #3333CB

Color harmonies

Complementary — #CCCC33:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #3333CB: #FFFFFF.

Semi-transparent (opacity) text on #3333CB

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 #3333CB 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 #3333CB 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

← #3333CA  ·  #3333CC →

Frequently asked questions

What color is #3333CB?

#3333CB is Blue, a blue color (RGB 51, 51, 203). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #3333CB?

#3333CB is RGB 51, 51, 203 — HSL 240°, 60%, 50% — CMYK 75%, 75%, 0%, 20%.

What colors go with #3333CB?

Its complement is #CCCC33; analogous partners are #3380CC and #8033CC. It also appears in 6+ palettes in our collection.

Can I use #3333CB for text?

White text on #3333CB has a contrast ratio of 8.48:1 (passes WCAG AA); black text gives 2.48:1.