Palettes / Colors / #252DBB

#252DBB — Blue

#252DBB 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 #252DBB 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.

#252DBB 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 #BBB425; it also sits naturally between #2578BB and #6925BB. 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 15% · Green 18% · Blue 73%

Cyan 80% · Magenta 76% · Yellow 0% · Key 27%

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

Previews

CSS code for #252DBB

.text { color: #252DBB; }
.background { background-color: #252DBB; }
.border { border: 3px solid #252DBB; }
.text-rgb { color: rgb(37, 45, 187); }
.text-hsl { color: hsl(237, 67%, 44%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #252DBB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(37, 45, 187, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #252DBB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(37, 45, 187, 0.8); }

HTML: <p style="color:#252DBB">Text here</p> · <div style="background-color:#252DBB">Div content here</div>

Shades of #252DBB

Tints of #252DBB

Tones of #252DBB

Color harmonies

Complementary — #BBB425:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #252DBB: #FFFFFF.

Semi-transparent (opacity) text on #252DBB

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 #252DBB 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 #252DBB 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

← #252DBA  ·  #252DBC →

Frequently asked questions

What color is #252DBB?

#252DBB is Blue, a blue color (RGB 37, 45, 187). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #252DBB?

#252DBB is RGB 37, 45, 187 — HSL 237°, 67%, 44% — CMYK 80%, 76%, 0%, 27%.

What colors go with #252DBB?

Its complement is #BBB425; analogous partners are #2578BB and #6925BB. It also appears in 6+ palettes in our collection.

Can I use #252DBB for text?

White text on #252DBB has a contrast ratio of 9.67:1 (passes WCAG AA); black text gives 2.17:1.