Palettes / Colors / #21425B

#21425B — Deep Muted Blue

#21425B is a blue color we call Deep Muted Blue, closest to the named color DarkSlateGray (#2F4F4F). It belongs to the blue family.

#21425B 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 #5A3920; it also sits naturally between #205A56 and #20245A. 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 26% · Blue 36%

Cyan 64% · Magenta 27% · Yellow 0% · Key 64%

Previews

CSS code for #21425B

.text { color: #21425B; }
.background { background-color: #21425B; }
.border { border: 3px solid #21425B; }
.text-rgb { color: rgb(33, 66, 91); }
.text-hsl { color: hsl(206, 47%, 24%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #21425B; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(33, 66, 91, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #21425B; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(33, 66, 91, 0.8); }

HTML: <p style="color:#21425B">Text here</p> · <div style="background-color:#21425B">Div content here</div>

Shades of #21425B

Tints of #21425B

Tones of #21425B

Color harmonies

Complementary — #5A3920:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #21425B: #FFFFFF.

How #21425B 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 #21425B

Similar colors

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

Browse neighbouring colors

← #21425A  ·  #21425C →

Frequently asked questions

What color is #21425B?

#21425B is Deep Muted Blue, a blue color (RGB 33, 66, 91). Its closest standard named color is DarkSlateGray.

What is the RGB and HSL of #21425B?

#21425B is RGB 33, 66, 91 — HSL 206°, 47%, 24% — CMYK 64%, 27%, 0%, 64%.

What colors go with #21425B?

Its complement is #5A3920; analogous partners are #205A56 and #20245A. It also appears in 6+ palettes in our collection.

Can I use #21425B for text?

White text on #21425B has a contrast ratio of 10.53:1 (passes WCAG AA); black text gives 2.00:1.