Palettes / Colors / #284BBD

#284BBD — Blue

#284BBD is a blue color we call Blue, closest to the named color RoyalBlue (#4169E1). It belongs to the blue family.

#284BBD 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 #BD9B28; it also sits naturally between #2896BD and #5028BD. 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 16% · Green 29% · Blue 74%

Cyan 79% · Magenta 60% · Yellow 0% · Key 26%

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

Previews

CSS code for #284BBD

.text { color: #284BBD; }
.background { background-color: #284BBD; }
.border { border: 3px solid #284BBD; }
.text-rgb { color: rgb(40, 75, 189); }
.text-hsl { color: hsl(226, 65%, 45%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #284BBD; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(40, 75, 189, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #284BBD; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(40, 75, 189, 0.8); }

HTML: <p style="color:#284BBD">Text here</p> · <div style="background-color:#284BBD">Div content here</div>

Shades of #284BBD

Tints of #284BBD

Tones of #284BBD

Color harmonies

Complementary — #BD9B28:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #284BBD: #FFFFFF.

How #284BBD 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 #284BBD 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

← #284BBC  ·  #284BBE →

Frequently asked questions

What color is #284BBD?

#284BBD is Blue, a blue color (RGB 40, 75, 189). Its closest standard named color is RoyalBlue.

What is the RGB and HSL of #284BBD?

#284BBD is RGB 40, 75, 189 — HSL 226°, 65%, 45% — CMYK 79%, 60%, 0%, 26%.

What colors go with #284BBD?

Its complement is #BD9B28; analogous partners are #2896BD and #5028BD. It also appears in 6+ palettes in our collection.

Can I use #284BBD for text?

White text on #284BBD has a contrast ratio of 7.42:1 (passes WCAG AA); black text gives 2.83:1.