Palettes / Colors / #223D4E

#223D4E — Deep Muted Blue

#223D4E is a blue color we call Deep Muted Blue, closest to the named color DarkSlateGray (#2F4F4F). It belongs to the blue family.

#223D4E is a cool blue color associated with trust, calm and professionalism. It is deep enough for text, outlines and dark interface surfaces, and makes light colors glow next to it.

Its strongest partner is its complement #4E3322; it also sits naturally between #224E49 and #22274E. 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 13% · Green 24% · Blue 31%

Cyan 56% · Magenta 22% · Yellow 0% · Key 69%

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

Previews

CSS code for #223D4E

.text { color: #223D4E; }
.background { background-color: #223D4E; }
.border { border: 3px solid #223D4E; }
.text-rgb { color: rgb(34, 61, 78); }
.text-hsl { color: hsl(203, 39%, 22%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #223D4E; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(34, 61, 78, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #223D4E; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(34, 61, 78, 0.8); }

HTML: <p style="color:#223D4E">Text here</p> · <div style="background-color:#223D4E">Div content here</div>

Shades of #223D4E

Tints of #223D4E

Tones of #223D4E

Color harmonies

Complementary — #4E3322:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #223D4E: #FFFFFF.

How #223D4E 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 #223D4E 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

← #223D4D  ·  #223D4F →

Frequently asked questions

What color is #223D4E?

#223D4E is Deep Muted Blue, a blue color (RGB 34, 61, 78). Its closest standard named color is DarkSlateGray.

What is the RGB and HSL of #223D4E?

#223D4E is RGB 34, 61, 78 — HSL 203°, 39%, 22% — CMYK 56%, 22%, 0%, 69%.

What colors go with #223D4E?

Its complement is #4E3322; analogous partners are #224E49 and #22274E. It also appears in 6+ palettes in our collection.

Can I use #223D4E for text?

White text on #223D4E has a contrast ratio of 11.38:1 (passes WCAG AA); black text gives 1.85:1.