Palettes / Colors / #313DBF

#313DBF — Blue

#313DBF 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 #313DBF 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.

#313DBF 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 #BFB331; it also sits naturally between #3184BF and #6C31BF. 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 24% · Blue 75%

Cyan 74% · Magenta 68% · Yellow 0% · Key 25%

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

Previews

CSS code for #313DBF

.text { color: #313DBF; }
.background { background-color: #313DBF; }
.border { border: 3px solid #313DBF; }
.text-rgb { color: rgb(49, 61, 191); }
.text-hsl { color: hsl(235, 59%, 47%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #313DBF; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(49, 61, 191, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #313DBF; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(49, 61, 191, 0.8); }

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

Shades of #313DBF

Tints of #313DBF

Tones of #313DBF

Color harmonies

Complementary — #BFB331:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #313DBF: #FFFFFF.

Semi-transparent (opacity) text on #313DBF

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 #313DBF 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 #313DBF 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

← #313DBE  ·  #313DC0 →

Frequently asked questions

What color is #313DBF?

#313DBF is Blue, a blue color (RGB 49, 61, 191). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #313DBF?

#313DBF is RGB 49, 61, 191 — HSL 235°, 59%, 47% — CMYK 74%, 68%, 0%, 25%.

What colors go with #313DBF?

Its complement is #BFB331; analogous partners are #3184BF and #6C31BF. It also appears in 6+ palettes in our collection.

Can I use #313DBF for text?

White text on #313DBF has a contrast ratio of 8.23:1 (passes WCAG AA); black text gives 2.55:1.