Palettes / Colors / #213947
#213947 — Deep Muted Blue
#213947 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 #213947 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.
#213947 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 #462E20; it also sits naturally between #204641 and #202546. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #213947 |
|---|---|
| RGB | 33, 57, 71 |
| HSL | 202°, 37%, 20% |
| HSV | 202°, 54%, 28% |
| CMYK | 54%, 20%, 0%, 72% |
| XYZ | 3.23, 3.70, 6.51 |
| Yxy | 3.70, 0.2402, 0.2757 |
| CIE-Lab | 22.67, -4.76, -11.52 |
| Hunter Lab | 19.25, -2.76, -7.91 |
RGB & CMYK percentages
Red 13% · Green 22% · Blue 28%
Cyan 54% · Magenta 20% · Yellow 0% · Key 72%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
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CSS code for #213947
.text { color: #213947; }
.background { background-color: #213947; }
.border { border: 3px solid #213947; }
.text-rgb { color: rgb(33, 57, 71); }
.text-hsl { color: hsl(202, 37%, 20%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #213947; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(33, 57, 71, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #213947; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(33, 57, 71, 0.8); }
HTML: <p style="color:#213947">Text here</p> · <div style="background-color:#213947">Div content here</div>
Shades of #213947
Tints of #213947
Tones of #213947
Color harmonies
Complementary — #462E20:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 12.06:1 AAA |
|---|---|
| Against black text | 1.74:1 Fails |
Best text color on #213947: #FFFFFF.
Semi-transparent (opacity) text on #213947
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:
Smaller body text shows the effect best.
Blended color: · Contrast against #213947: ·
How #213947 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 #213947 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
Frequently asked questions
What color is #213947?
#213947 is Deep Muted Blue, a blue color (RGB 33, 57, 71). Its closest standard named color is DarkSlateGray.
What is the RGB and HSL of #213947?
#213947 is RGB 33, 57, 71 — HSL 202°, 37%, 20% — CMYK 54%, 20%, 0%, 72%.
What colors go with #213947?
Its complement is #462E20; analogous partners are #204641 and #202546. It also appears in 6+ palettes in our collection.
Can I use #213947 for text?
White text on #213947 has a contrast ratio of 12.06:1 (passes WCAG AA); black text gives 1.74:1.