Palettes / Colors / #183239

#183239 — Deep Muted Teal

#183239 is a teal color we call Deep Muted Teal, closest to the named color DarkSlateGray (#2F4F4F). It belongs to the teal family.

Color name

Closest CSS keyword: darkslategray (#2F4F4F) — not an exact match. CSS darkslategray gives you #2F4F4F, a different color; use #183239 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.

#183239 is a cool teal color associated with freshness, clarity and balance. 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 #3A1F18; it also sits naturally between #183A30 and #18223A. 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 9% · Green 20% · Blue 22%

Cyan 58% · Magenta 12% · Yellow 0% · Key 78%

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

Previews

CSS code for #183239

.text { color: #183239; }
.background { background-color: #183239; }
.border { border: 3px solid #183239; }
.text-rgb { color: rgb(24, 50, 57); }
.text-hsl { color: hsl(193, 41%, 16%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #183239; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(24, 50, 57, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #183239; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(24, 50, 57, 0.8); }

HTML: <p style="color:#183239">Text here</p> · <div style="background-color:#183239">Div content here</div>

Shades of #183239

Tints of #183239

Tones of #183239

Color harmonies

Complementary — #3A1F18:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #183239: #FFFFFF.

Semi-transparent (opacity) text on #183239

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 #183239 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 #183239 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

← #183238  ·  #18323A →

Frequently asked questions

What color is #183239?

#183239 is Deep Muted Teal, a teal color (RGB 24, 50, 57). Its closest standard named color is DarkSlateGray.

What is the RGB and HSL of #183239?

#183239 is RGB 24, 50, 57 — HSL 193°, 41%, 16% — CMYK 58%, 12%, 0%, 78%.

What colors go with #183239?

Its complement is #3A1F18; analogous partners are #183A30 and #18223A. It also appears in 6+ palettes in our collection.

Can I use #183239 for text?

White text on #183239 has a contrast ratio of 13.51:1 (passes WCAG AA); black text gives 1.55:1.