Palettes / Colors / #18287C

#18287C — Blue

#18287C is a blue color we call 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 #18287C 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.

#18287C 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 #7C6B18; it also sits naturally between #185B7C and #39187C. 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 9% · Green 16% · Blue 49%

Cyan 81% · Magenta 68% · Yellow 0% · Key 51%

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

Previews

CSS code for #18287C

.text { color: #18287C; }
.background { background-color: #18287C; }
.border { border: 3px solid #18287C; }
.text-rgb { color: rgb(24, 40, 124); }
.text-hsl { color: hsl(230, 68%, 29%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #18287C; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(24, 40, 124, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #18287C; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(24, 40, 124, 0.8); }

HTML: <p style="color:#18287C">Text here</p> · <div style="background-color:#18287C">Div content here</div>

Shades of #18287C

Tints of #18287C

Tones of #18287C

Color harmonies

Complementary — #7C6B18:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #18287C: #FFFFFF.

Semi-transparent (opacity) text on #18287C

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 #18287C 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 #18287C 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

← #18287B  ·  #18287D →

Frequently asked questions

What color is #18287C?

#18287C is Blue, a blue color (RGB 24, 40, 124). Its closest standard named color is MidnightBlue.

What is the RGB and HSL of #18287C?

#18287C is RGB 24, 40, 124 — HSL 230°, 68%, 29% — CMYK 81%, 68%, 0%, 51%.

What colors go with #18287C?

Its complement is #7C6B18; analogous partners are #185B7C and #39187C. It also appears in 6+ palettes in our collection.

Can I use #18287C for text?

White text on #18287C has a contrast ratio of 12.86:1 (passes WCAG AA); black text gives 1.63:1.