Palettes / Colors / #1D3558

#1D3558 — Deep Muted Blue

#1D3558 is a blue color we call Deep Muted Blue, closest to the named color DarkSlateGray (#2F4F4F). It belongs to the blue family.

#1D3558 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 #58411D; it also sits naturally between #1D5258 and #231D58. 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 11% · Green 21% · Blue 35%

Cyan 67% · Magenta 40% · Yellow 0% · Key 65%

Previews

CSS code for #1D3558

.text { color: #1D3558; }
.background { background-color: #1D3558; }
.border { border: 3px solid #1D3558; }
.text-rgb { color: rgb(29, 53, 88); }
.text-hsl { color: hsl(216, 50%, 23%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #1D3558; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(29, 53, 88, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #1D3558; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(29, 53, 88, 0.8); }

HTML: <p style="color:#1D3558">Text here</p> · <div style="background-color:#1D3558">Div content here</div>

Shades of #1D3558

Tints of #1D3558

Tones of #1D3558

Color harmonies

Complementary — #58411D:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #1D3558: #FFFFFF.

How #1D3558 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 #1D3558 or a close neighbour

Similar colors

The closest colors that actually appear in our palette collection — click any to open its page:

Browse neighbouring colors

← #1D3557  ·  #1D3559 →

Frequently asked questions

What color is #1D3558?

#1D3558 is Deep Muted Blue, a blue color (RGB 29, 53, 88). Its closest standard named color is DarkSlateGray.

What is the RGB and HSL of #1D3558?

#1D3558 is RGB 29, 53, 88 — HSL 216°, 50%, 23% — CMYK 67%, 40%, 0%, 65%.

What colors go with #1D3558?

Its complement is #58411D; analogous partners are #1D5258 and #231D58. It also appears in 6+ palettes in our collection.

Can I use #1D3558 for text?

White text on #1D3558 has a contrast ratio of 12.34:1 (passes WCAG AA); black text gives 1.70:1.