Palettes / Colors / #3872BB

#3872BB — Muted Blue

#3872BB is a blue color we call Muted Blue, closest to the named color SteelBlue (#4682B4). It belongs to the blue family.

Color name

Closest CSS keyword: steelblue (#4682B4) — not an exact match. CSS steelblue gives you #4682B4, a different color; use #3872BB 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.

#3872BB is a cool blue color associated with trust, calm and professionalism. It sits comfortably in the middle: usable for large areas in soft schemes, or as a supporting color beside something stronger.

Its strongest partner is its complement #BC8138; it also sits naturally between #38B6BC and #3F38BC. 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 22% · Green 45% · Blue 73%

Cyan 70% · Magenta 39% · Yellow 0% · Key 27%

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

Previews

CSS code for #3872BB

.text { color: #3872BB; }
.background { background-color: #3872BB; }
.border { border: 3px solid #3872BB; }
.text-rgb { color: rgb(56, 114, 187); }
.text-hsl { color: hsl(213, 54%, 48%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #3872BB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(56, 114, 187, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #3872BB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(56, 114, 187, 0.8); }

HTML: <p style="color:#3872BB">Text here</p> · <div style="background-color:#3872BB">Div content here</div>

Shades of #3872BB

Tints of #3872BB

Tones of #3872BB

Color harmonies

Complementary — #BC8138:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #3872BB: #FFFFFF.

Semi-transparent (opacity) text on #3872BB

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 #3872BB 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 #3872BB 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

← #3872BA  ·  #3872BC →

Frequently asked questions

What color is #3872BB?

#3872BB is Muted Blue, a blue color (RGB 56, 114, 187). Its closest standard named color is SteelBlue.

What is the RGB and HSL of #3872BB?

#3872BB is RGB 56, 114, 187 — HSL 213°, 54%, 48% — CMYK 70%, 39%, 0%, 27%.

What colors go with #3872BB?

Its complement is #BC8138; analogous partners are #38B6BC and #3F38BC. It also appears in 6+ palettes in our collection.

Can I use #3872BB for text?

White text on #3872BB has a contrast ratio of 4.89:1 (passes WCAG AA); black text gives 4.29:1.