Palettes / Colors / #588FBB

#588FBB — Muted Blue

#588FBB is a blue color we call Muted 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 #588FBB 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.

#588FBB 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 #BB8558; it also sits naturally between #58BBB6 and #585DBB. 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 35% · Green 56% · Blue 73%

Cyan 53% · Magenta 24% · Yellow 0% · Key 27%

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

Previews

CSS code for #588FBB

.text { color: #588FBB; }
.background { background-color: #588FBB; }
.border { border: 3px solid #588FBB; }
.text-rgb { color: rgb(88, 143, 187); }
.text-hsl { color: hsl(207, 42%, 54%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #588FBB; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(88, 143, 187, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #588FBB; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(88, 143, 187, 0.8); }

HTML: <p style="color:#588FBB">Text here</p> · <div style="background-color:#588FBB">Div content here</div>

Shades of #588FBB

Tints of #588FBB

Tones of #588FBB

Color harmonies

Complementary — #BB8558:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #588FBB: #000000.

Semi-transparent (opacity) text on #588FBB

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 #588FBB 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 #588FBB 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

← #588FBA  ·  #588FBC →

Frequently asked questions

What color is #588FBB?

#588FBB is Muted Blue, a blue color (RGB 88, 143, 187). Its closest standard named color is SteelBlue.

What is the RGB and HSL of #588FBB?

#588FBB is RGB 88, 143, 187 — HSL 207°, 42%, 54% — CMYK 53%, 24%, 0%, 27%.

What colors go with #588FBB?

Its complement is #BB8558; analogous partners are #58BBB6 and #585DBB. It also appears in 6+ palettes in our collection.

Can I use #588FBB for text?

Black text on #588FBB has a contrast ratio of 6.06:1 (passes WCAG AA); white text gives 3.46:1.