Palettes / Colors / #243CB2

#243CB2 — Blue

#243CB2 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 #243CB2 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.

#243CB2 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 #B29A24; it also sits naturally between #2483B2 and #5424B2. 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 14% · Green 24% · Blue 70%

Cyan 80% · Magenta 66% · Yellow 0% · Key 30%

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

Previews

CSS code for #243CB2

.text { color: #243CB2; }
.background { background-color: #243CB2; }
.border { border: 3px solid #243CB2; }
.text-rgb { color: rgb(36, 60, 178); }
.text-hsl { color: hsl(230, 66%, 42%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #243CB2; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(36, 60, 178, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #243CB2; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(36, 60, 178, 0.8); }

HTML: <p style="color:#243CB2">Text here</p> · <div style="background-color:#243CB2">Div content here</div>

Shades of #243CB2

Tints of #243CB2

Tones of #243CB2

Color harmonies

Complementary — #B29A24:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #243CB2: #FFFFFF.

Semi-transparent (opacity) text on #243CB2

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 #243CB2 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 #243CB2 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

← #243CB1  ·  #243CB3 →

Frequently asked questions

What color is #243CB2?

#243CB2 is Blue, a blue color (RGB 36, 60, 178). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #243CB2?

#243CB2 is RGB 36, 60, 178 — HSL 230°, 66%, 42% — CMYK 80%, 66%, 0%, 30%.

What colors go with #243CB2?

Its complement is #B29A24; analogous partners are #2483B2 and #5424B2. It also appears in 6+ palettes in our collection.

Can I use #243CB2 for text?

White text on #243CB2 has a contrast ratio of 8.88:1 (passes WCAG AA); black text gives 2.36:1.