Palettes / Colors / #313166

#313166 — Muted Blue

#313166 is a blue color we call Muted Blue, closest to the named color MidnightBlue (#191970). It belongs to the blue family.

Color name

Closest CSS keyword: midnightblue (#191970) — not an exact match. CSS midnightblue gives you #191970, a different color; use #313166 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.

#313166 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 #676732; it also sits naturally between #324D67 and #4D3267. 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 19% · Green 19% · Blue 40%

Cyan 52% · Magenta 52% · Yellow 0% · Key 60%

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

Previews

CSS code for #313166

.text { color: #313166; }
.background { background-color: #313166; }
.border { border: 3px solid #313166; }
.text-rgb { color: rgb(49, 49, 102); }
.text-hsl { color: hsl(240, 35%, 30%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #313166; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(49, 49, 102, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #313166; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(49, 49, 102, 0.8); }

HTML: <p style="color:#313166">Text here</p> · <div style="background-color:#313166">Div content here</div>

Shades of #313166

Tints of #313166

Tones of #313166

Color harmonies

Complementary — #676732:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #313166: #FFFFFF.

Semi-transparent (opacity) text on #313166

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 #313166 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 #313166 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

← #313165  ·  #313167 →

Frequently asked questions

What color is #313166?

#313166 is Muted Blue, a blue color (RGB 49, 49, 102). Its closest standard named color is MidnightBlue.

What is the RGB and HSL of #313166?

#313166 is RGB 49, 49, 102 — HSL 240°, 35%, 30% — CMYK 52%, 52%, 0%, 60%.

What colors go with #313166?

Its complement is #676732; analogous partners are #324D67 and #4D3267. It also appears in 6+ palettes in our collection.

Can I use #313166 for text?

White text on #313166 has a contrast ratio of 11.92:1 (passes WCAG AA); black text gives 1.76:1.