Palettes / Colors / #24283F

#24283F — Deep Dusty Blue

#24283F is a blue color we call Deep Dusty 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 #24283F 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.

#24283F 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 #3E3A23; it also sits naturally between #23343E and #2D233E. 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 14% · Green 16% · Blue 25%

Cyan 43% · Magenta 37% · Yellow 0% · Key 75%

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

Previews

CSS code for #24283F

.text { color: #24283F; }
.background { background-color: #24283F; }
.border { border: 3px solid #24283F; }
.text-rgb { color: rgb(36, 40, 63); }
.text-hsl { color: hsl(231, 27%, 19%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #24283F; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(36, 40, 63, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #24283F; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(36, 40, 63, 0.8); }

HTML: <p style="color:#24283F">Text here</p> · <div style="background-color:#24283F">Div content here</div>

Shades of #24283F

Tints of #24283F

Tones of #24283F

Color harmonies

Complementary — #3E3A23:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #24283F: #FFFFFF.

Semi-transparent (opacity) text on #24283F

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 #24283F 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 #24283F 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

← #24283E  ·  #242840 →

Frequently asked questions

What color is #24283F?

#24283F is Deep Dusty Blue, a blue color (RGB 36, 40, 63). Its closest standard named color is DarkSlateGray.

What is the RGB and HSL of #24283F?

#24283F is RGB 36, 40, 63 — HSL 231°, 27%, 19% — CMYK 43%, 37%, 0%, 75%.

What colors go with #24283F?

Its complement is #3E3A23; analogous partners are #23343E and #2D233E. It also appears in 6+ palettes in our collection.

Can I use #24283F for text?

White text on #24283F has a contrast ratio of 14.48:1 (passes WCAG AA); black text gives 1.45:1.