Palettes / Colors / #313FBC

#313FBC — Blue

#313FBC is a blue color we call Blue, closest to the named color DarkSlateBlue (#483D8B). It belongs to the blue family.

Color name

Closest CSS keyword: darkslateblue (#483D8B) — not an exact match. CSS darkslateblue gives you #483D8B, a different color; use #313FBC 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.

#313FBC 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 #BBAD30; it also sits naturally between #3083BB and #6730BB. 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 25% · Blue 74%

Cyan 74% · Magenta 66% · Yellow 0% · Key 26%

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

Previews

CSS code for #313FBC

.text { color: #313FBC; }
.background { background-color: #313FBC; }
.border { border: 3px solid #313FBC; }
.text-rgb { color: rgb(49, 63, 188); }
.text-hsl { color: hsl(234, 59%, 46%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #313FBC; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(49, 63, 188, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #313FBC; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(49, 63, 188, 0.8); }

HTML: <p style="color:#313FBC">Text here</p> · <div style="background-color:#313FBC">Div content here</div>

Shades of #313FBC

Tints of #313FBC

Tones of #313FBC

Color harmonies

Complementary — #BBAD30:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #313FBC: #FFFFFF.

Semi-transparent (opacity) text on #313FBC

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 #313FBC 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 #313FBC 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

← #313FBB  ·  #313FBD →

Frequently asked questions

What color is #313FBC?

#313FBC is Blue, a blue color (RGB 49, 63, 188). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #313FBC?

#313FBC is RGB 49, 63, 188 — HSL 234°, 59%, 46% — CMYK 74%, 66%, 0%, 26%.

What colors go with #313FBC?

Its complement is #BBAD30; analogous partners are #3083BB and #6730BB. It also appears in 6+ palettes in our collection.

Can I use #313FBC for text?

White text on #313FBC has a contrast ratio of 8.18:1 (passes WCAG AA); black text gives 2.57:1.