Palettes / Colors / #618BB5

#618BB5 — Muted Blue

#618BB5 is a blue color we call Muted Blue, closest to the named color CadetBlue (#5F9EA0). It belongs to the blue family.

Color name

Closest CSS keyword: cadetblue (#5F9EA0) — not an exact match. CSS cadetblue gives you #5F9EA0, a different color; use #618BB5 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.

#618BB5 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 #B68C63; it also sits naturally between #63B6B6 and #6363B6. 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 38% · Green 55% · Blue 71%

Cyan 46% · Magenta 23% · Yellow 0% · Key 29%

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

Previews

CSS code for #618BB5

.text { color: #618BB5; }
.background { background-color: #618BB5; }
.border { border: 3px solid #618BB5; }
.text-rgb { color: rgb(97, 139, 181); }
.text-hsl { color: hsl(210, 36%, 55%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #618BB5; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(97, 139, 181, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #618BB5; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(97, 139, 181, 0.8); }

HTML: <p style="color:#618BB5">Text here</p> · <div style="background-color:#618BB5">Div content here</div>

Shades of #618BB5

Tints of #618BB5

Tones of #618BB5

Color harmonies

Complementary — #B68C63:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #618BB5: #000000.

Semi-transparent (opacity) text on #618BB5

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 #618BB5 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 #618BB5 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

← #618BB4  ·  #618BB6 →

Frequently asked questions

What color is #618BB5?

#618BB5 is Muted Blue, a blue color (RGB 97, 139, 181). Its closest standard named color is CadetBlue.

What is the RGB and HSL of #618BB5?

#618BB5 is RGB 97, 139, 181 — HSL 210°, 36%, 55% — CMYK 46%, 23%, 0%, 29%.

What colors go with #618BB5?

Its complement is #B68C63; analogous partners are #63B6B6 and #6363B6. It also appears in 6+ palettes in our collection.

Can I use #618BB5 for text?

Black text on #618BB5 has a contrast ratio of 5.87:1 (passes WCAG AA); white text gives 3.58:1.