Palettes / Colors / #0451CD

#0451CD — Vivid Blue

#0451CD is a blue color we call Vivid 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 #0451CD 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.

#0451CD 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 #CD8004; it also sits naturally between #04B5CD and #1C04CD. 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 2% · Green 32% · Blue 80%

Cyan 98% · Magenta 60% · Yellow 0% · Key 20%

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

Previews

CSS code for #0451CD

.text { color: #0451CD; }
.background { background-color: #0451CD; }
.border { border: 3px solid #0451CD; }
.text-rgb { color: rgb(4, 81, 205); }
.text-hsl { color: hsl(217, 96%, 41%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #0451CD; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(4, 81, 205, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #0451CD; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(4, 81, 205, 0.8); }

HTML: <p style="color:#0451CD">Text here</p> · <div style="background-color:#0451CD">Div content here</div>

Shades of #0451CD

Tints of #0451CD

Tones of #0451CD

Color harmonies

Complementary — #CD8004:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #0451CD: #FFFFFF.

Semi-transparent (opacity) text on #0451CD

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 #0451CD 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 #0451CD 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

← #0451CC  ·  #0451CE →

Frequently asked questions

What color is #0451CD?

#0451CD is Vivid Blue, a blue color (RGB 4, 81, 205). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #0451CD?

#0451CD is RGB 4, 81, 205 — HSL 217°, 96%, 41% — CMYK 98%, 60%, 0%, 20%.

What colors go with #0451CD?

Its complement is #CD8004; analogous partners are #04B5CD and #1C04CD. It also appears in 6+ palettes in our collection.

Can I use #0451CD for text?

White text on #0451CD has a contrast ratio of 6.85:1 (passes WCAG AA); black text gives 3.06:1.