Palettes / Colors / #2D4E66

#2D4E66 — Muted Blue

#2D4E66 is a blue color we call Muted Blue, closest to the named color DarkSlateGray (#2F4F4F). It belongs to the blue family.

Color name

Closest CSS keyword: darkslategray (#2F4F4F) — not an exact match. CSS darkslategray gives you #2F4F4F, a different color; use #2D4E66 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.

#2D4E66 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 #67452D; it also sits naturally between #2D6762 and #2D3267. 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 18% · Green 31% · Blue 40%

Cyan 56% · Magenta 24% · Yellow 0% · Key 60%

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

Previews

CSS code for #2D4E66

.text { color: #2D4E66; }
.background { background-color: #2D4E66; }
.border { border: 3px solid #2D4E66; }
.text-rgb { color: rgb(45, 78, 102); }
.text-hsl { color: hsl(205, 39%, 29%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #2D4E66; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(45, 78, 102, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #2D4E66; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(45, 78, 102, 0.8); }

HTML: <p style="color:#2D4E66">Text here</p> · <div style="background-color:#2D4E66">Div content here</div>

Shades of #2D4E66

Tints of #2D4E66

Tones of #2D4E66

Color harmonies

Complementary — #67452D:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #2D4E66: #FFFFFF.

Semi-transparent (opacity) text on #2D4E66

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 #2D4E66 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 #2D4E66 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

← #2D4E65  ·  #2D4E67 →

Frequently asked questions

What color is #2D4E66?

#2D4E66 is Muted Blue, a blue color (RGB 45, 78, 102). Its closest standard named color is DarkSlateGray.

What is the RGB and HSL of #2D4E66?

#2D4E66 is RGB 45, 78, 102 — HSL 205°, 39%, 29% — CMYK 56%, 24%, 0%, 60%.

What colors go with #2D4E66?

Its complement is #67452D; analogous partners are #2D6762 and #2D3267. It also appears in 6+ palettes in our collection.

Can I use #2D4E66 for text?

White text on #2D4E66 has a contrast ratio of 8.77:1 (passes WCAG AA); black text gives 2.39:1.