Palettes / Colors / #1F577F

#1F577F — Blue

#1F577F is a blue color we call Blue, closest to the named color DarkSlateBlue (#483D8B). It belongs to the blue family.

#1F577F is a cool blue color associated with trust, calm and professionalism. It is saturated enough to be the accent — buttons, highlights and calls to action — while neutrals do the quiet work around it.

Its strongest partner is its complement #7F471F; it also sits naturally between #1F7F77 and #1F277F. 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 12% · Green 34% · Blue 50%

Cyan 76% · Magenta 31% · Yellow 0% · Key 50%

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

Previews

CSS code for #1F577F

.text { color: #1F577F; }
.background { background-color: #1F577F; }
.border { border: 3px solid #1F577F; }
.text-rgb { color: rgb(31, 87, 127); }
.text-hsl { color: hsl(205, 61%, 31%); }
.text-shadow-hex { text-shadow: 4px 4px 2px #1F577F; }
.text-shadow-rgba { text-shadow: 4px 4px 2px rgba(31, 87, 127, 0.8); }
.box-shadow-hex { box-shadow: 1px 1px 3px 2px #1F577F; }
.box-shadow-rgba { box-shadow: 1px 1px 3px 2px rgba(31, 87, 127, 0.8); }

HTML: <p style="color:#1F577F">Text here</p> · <div style="background-color:#1F577F">Div content here</div>

Shades of #1F577F

Tints of #1F577F

Tones of #1F577F

Color harmonies

Complementary — #7F471F:

Analogous:

Triadic:

Contrast & accessibility

Best text color on #1F577F: #FFFFFF.

How #1F577F 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 #1F577F 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

← #1F577E  ·  #1F5780 →

Frequently asked questions

What color is #1F577F?

#1F577F is Blue, a blue color (RGB 31, 87, 127). Its closest standard named color is DarkSlateBlue.

What is the RGB and HSL of #1F577F?

#1F577F is RGB 31, 87, 127 — HSL 205°, 61%, 31% — CMYK 76%, 31%, 0%, 50%.

What colors go with #1F577F?

Its complement is #7F471F; analogous partners are #1F7F77 and #1F277F. It also appears in 6+ palettes in our collection.

Can I use #1F577F for text?

White text on #1F577F has a contrast ratio of 7.70:1 (passes WCAG AA); black text gives 2.73:1.