Palettes / Colors / #358CBB

#358CBB — Blue

#358CBB is a blue color we call Blue, closest to the named color SteelBlue (#4682B4). It belongs to the blue family.

Color name

Closest CSS keyword: steelblue (#4682B4) — not an exact match. CSS steelblue gives you #4682B4, a different color; use #358CBB 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.

#358CBB 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 #BB6435; it also sits naturally between #35BBA7 and #3549BB. 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 21% · Green 55% · Blue 73%

Cyan 72% · Magenta 25% · Yellow 0% · Key 27%

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

Previews

CSS code for #358CBB

.text { color: #358CBB; }
.background { background-color: #358CBB; }
.border { border: 3px solid #358CBB; }
.text-rgb { color: rgb(53, 140, 187); }
.text-hsl { color: hsl(201, 56%, 47%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #358CBB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(53, 140, 187, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #358CBB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(53, 140, 187, 0.8); }

HTML: <p style="color:#358CBB">Text here</p> · <div style="background-color:#358CBB">Div content here</div>

Shades of #358CBB

Tints of #358CBB

Tones of #358CBB

Color harmonies

Complementary — #BB6435:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #358CBB: #000000.

Semi-transparent (opacity) text on #358CBB

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 #358CBB 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 #358CBB 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

← #358CBA  ·  #358CBC →

Frequently asked questions

What color is #358CBB?

#358CBB is Blue, a blue color (RGB 53, 140, 187). Its closest standard named color is SteelBlue.

What is the RGB and HSL of #358CBB?

#358CBB is RGB 53, 140, 187 — HSL 201°, 56%, 47% — CMYK 72%, 25%, 0%, 27%.

What colors go with #358CBB?

Its complement is #BB6435; analogous partners are #35BBA7 and #3549BB. It also appears in 6+ palettes in our collection.

Can I use #358CBB for text?

Black text on #358CBB has a contrast ratio of 5.62:1 (passes WCAG AA); white text gives 3.74:1.