Palettes / Colors / #263D91
#263D91 — Blue
#263D91 is a blue color we call 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 #263D91 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.
#263D91 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 #917A27; it also sits naturally between #277391 and #452791. In the palettes below you can see it working alongside real color combinations from our collection.
Color values
| HEX | #263D91 |
|---|---|
| RGB | 38, 61, 145 |
| HSL | 227°, 58%, 36% |
| HSV | 227°, 74%, 57% |
| CMYK | 74%, 58%, 0%, 43% |
| XYZ | 7.58, 5.79, 27.51 |
| Yxy | 5.79, 0.1854, 0.1417 |
| CIE-Lab | 28.89, 21.73, -49.04 |
| Hunter Lab | 24.07, 15.61, -54.22 |
RGB & CMYK percentages
Red 15% · Green 24% · Blue 57%
Cyan 74% · Magenta 58% · Yellow 0% · Key 43%
CMYK values are unprofiled approximations for screen reference — not a print-proofing guarantee.
Previews
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CSS code for #263D91
.text { color: #263D91; }
.background { background-color: #263D91; }
.border { border: 3px solid #263D91; }
.text-rgb { color: rgb(38, 61, 145); }
.text-hsl { color: hsl(227, 58%, 36%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #263D91; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(38, 61, 145, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #263D91; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(38, 61, 145, 0.8); }
HTML: <p style="color:#263D91">Text here</p> · <div style="background-color:#263D91">Div content here</div>
Shades of #263D91
Tints of #263D91
Tones of #263D91
Color harmonies
Complementary — #917A27:
Analogous:
Triadic:
Contrast & accessibility
| Against white text | 9.73:1 AAA |
|---|---|
| Against black text | 2.16:1 Fails |
Best text color on #263D91: #FFFFFF.
Semi-transparent (opacity) text on #263D91
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 #263D91: ·
How #263D91 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 #263D91 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 #263D91?
#263D91 is Blue, a blue color (RGB 38, 61, 145). Its closest standard named color is DarkSlateBlue.
What is the RGB and HSL of #263D91?
#263D91 is RGB 38, 61, 145 — HSL 227°, 58%, 36% — CMYK 74%, 58%, 0%, 43%.
What colors go with #263D91?
Its complement is #917A27; analogous partners are #277391 and #452791. It also appears in 6+ palettes in our collection.
Can I use #263D91 for text?
White text on #263D91 has a contrast ratio of 9.73:1 (passes WCAG AA); black text gives 2.16:1.