Palettes / Colors / #333373
#333373 — Muted Blue
#333373 is a blue color we call Muted Blue, closest to the named color DarkSlateBlue (#483D8B). It belongs to the blue family.
Color name
Closest CSS keyword: darkslateblue (#483D8B) — not an exact match. CSS darkslateblue gives you #483D8B, a different color; use #333373 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.
#333373 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 #757533; it also sits naturally between #335475 and #543375. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #333373 |
|---|---|
| RGB | 51, 51, 115 |
| HSL | 240°, 39%, 33% |
| HSV | 240°, 56%, 45% |
| CMYK | 56%, 56%, 0%, 55% |
| XYZ | 5.64, 4.31, 16.75 |
| Yxy | 4.31, 0.2113, 0.1614 |
| CIE-Lab | 24.67, 19.77, -37.05 |
| Hunter Lab | 20.76, 13.52, -35.78 |
RGB & CMYK percentages
Red 20% · Green 20% · Blue 45%
Cyan 56% · Magenta 56% · Yellow 0% · Key 55%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
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CSS code for #333373
.text { color: #333373; }
.background { background-color: #333373; }
.border { border: 3px solid #333373; }
.text-rgb { color: rgb(51, 51, 115); }
.text-hsl { color: hsl(240, 39%, 33%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #333373; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(51, 51, 115, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #333373; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(51, 51, 115, 0.8); }
HTML: <p style="color:#333373">Text here</p> · <div style="background-color:#333373">Div content here</div>
Shades of #333373
Tints of #333373
Tones of #333373
Color harmonies
Complementary — #757533:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 11.28:1 AAA |
|---|---|
| Against black text | 1.86:1 Fails |
Best text color on #333373: #FFFFFF.
Semi-transparent (opacity) text on #333373
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 #333373: ·
How #333373 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 #333373 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 #333373?
#333373 is Muted Blue, a blue color (RGB 51, 51, 115). Its closest standard named color is DarkSlateBlue.
What is the RGB and HSL of #333373?
#333373 is RGB 51, 51, 115 — HSL 240°, 39%, 33% — CMYK 56%, 56%, 0%, 55%.
What colors go with #333373?
Its complement is #757533; analogous partners are #335475 and #543375. It also appears in 6+ palettes in our collection.
Can I use #333373 for text?
White text on #333373 has a contrast ratio of 11.28:1 (passes WCAG AA); black text gives 1.86:1.