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Nostalgic Inlet

#577b8c
Notes

Nostalgic Inlet (#577B8C) is a true cyan with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (199°, 23%, 45%) places it in the muted band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#577b8c
RGB
rgb(87, 123, 140)
HSL
hsl(199, 23%, 45%)
HWB
hwb(199 34% 45%)
OKLCH
oklch(56.2% 0.048 228.9)
P3
color(display-p3 0.3712 0.4785 0.5418)
HSV
hsv(199, 38%, 55%)
LAB
lab(49.60% -8.15 -13.27)
LCH
lch(49.60% 15.57 238.45)
CMYK
cmyk(38%, 12%, 0%, 45%)

Etymology

Nostalgic
adjective

Greek nóstos (return-home) plus álgos (pain) — adjectival suffix -ic. As a color modifier, nostalgic implies a hushed-and-yearning-for-the-past-and-bittersweet quality where the hue carries the visual register of multi-decade-faded-and-memory-laden period-correct color. Sits at the hushed-and-melancholy end of the grid, parallel to wistful and bygone in usage.

Inlet
noun

A narrow body of water leading inland from a sea or lake — particularly the saltwater inlets of the Pacific Northwest and Norway. Inlet color refers to a Pacific Northwest fjord inlet at midday: a saturated, slightly cool deep blue with the optical depth of cold-water tidal inlet.

Closest matches

The nearest named color in three reference sources, ranked by perceptual distance (ΔE76 in CIELAB). ΔE < 1 is imperceptible to most viewers; ΔE > 10 is clearly different. When two sources point to the same hex they’re merged into one tile; click any to open that color’s page.

Variations

Click any swatch to explore

Harmonies

Accessibility

Color-vision simulation

How this color appears to viewers with the four major color-vision-deficiency types. Computed via the Machado (2009) physiologically-based model. If a tile matches the original, the color reads the same to that viewer.

#577b8c
Original
#72798d
Protanopia
#6b738c
Deuteranopia
#448080
Tritanopia
#757575
Achromatopsia
WCAG contrast

The color used as foreground text against pure white and pure black, with the contrast ratio and WCAG 2.1 grade. Aim for AA (4.5:1) for body text and AA Large (3:1) for 18 pt+ headlines; AAA (7:1) is the gold standard for long-form reading surfaces.

The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon White
4.55:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.62:1

Wide gamut

Display P3 representation

The CSS Color 4 wide-gamut form of this color. Both swatches render the same color on every display — the P3 form only diverges from sRGB when a designer pushes channels outside sRGB's reach.

sRGB hex
sRGB hex
##577B8C
Display P3
Display P3
color(display-p3 0.3712 0.4785 0.5418)
Inside sRGBOKLCH chroma 0.048

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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