Palettes / Colors / #2B375A

#2B375A — Deep Muted Blue

#2B375A is a blue color we call Deep 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 #2B375A 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.

#2B375A 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 #5A4E2B; it also sits naturally between #2B4E5A and #372B5A. 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 17% · Green 22% · Blue 35%

Cyan 52% · Magenta 39% · Yellow 0% · Key 65%

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

Previews

CSS code for #2B375A

.text { color: #2B375A; }
.background { background-color: #2B375A; }
.border { border: 3px solid #2B375A; }
.text-rgb { color: rgb(43, 55, 90); }
.text-hsl { color: hsl(225, 35%, 26%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #2B375A; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(43, 55, 90, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #2B375A; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(43, 55, 90, 0.8); }

HTML: <p style="color:#2B375A">Text here</p> · <div style="background-color:#2B375A">Div content here</div>

Shades of #2B375A

Tints of #2B375A

Tones of #2B375A

Color harmonies

Complementary — #5A4E2B:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #2B375A: #FFFFFF.

Semi-transparent (opacity) text on #2B375A

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 #2B375A 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 #2B375A 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

← #2B3759  ·  #2B375B →

Frequently asked questions

What color is #2B375A?

#2B375A is Deep Muted Blue, a blue color (RGB 43, 55, 90). Its closest standard named color is DarkSlateGray.

What is the RGB and HSL of #2B375A?

#2B375A is RGB 43, 55, 90 — HSL 225°, 35%, 26% — CMYK 52%, 39%, 0%, 65%.

What colors go with #2B375A?

Its complement is #5A4E2B; analogous partners are #2B4E5A and #372B5A. It also appears in 6+ palettes in our collection.

Can I use #2B375A for text?

White text on #2B375A has a contrast ratio of 11.69:1 (passes WCAG AA); black text gives 1.80:1.