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Tidy Helsinki

#3389b1
Notes

Tidy Helsinki (#3389B1) 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°, 55%, 45%) places it in the balanced 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
#3389b1
RGB
rgb(51, 137, 177)
HSL
hsl(199, 55%, 45%)
HWB
hwb(199 20% 31%)
OKLCH
oklch(59.6% 0.101 232.3)
HSV
hsv(199, 71%, 69%)
LAB
lab(53.78% -12.35 -28.47)
LCH
lch(53.78% 31.04 246.55)
CMYK
cmyk(71%, 23%, 0%, 31%)

Etymology

Tidy
adjective

Old English tidig, timely — drifted in modern English to mean neat, orderly. Used as a color modifier for hues that read as composed and unfussy. Tidy beige, tidy gray: moderate saturation combined with optical neatness. Sits at the crisp-bucket alongside plain and modest.

Helsinki
noun

The Finnish capital — and the deep blue of the Gulf of Finland and the saturated blue of Helsinki Cathedral dome. Helsinki refers to a Helsinki market-square sea-view at midday: a saturated, slightly cool deep blue with the optical clarity of cold Baltic water under Nordic sky.

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.

#3389b1
Original
#7587b3
Protanopia
#647bb0
Deuteranopia
#009496
Tritanopia
#7a7a7a
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).
AA Largeon White
3.92:1
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
5.35:1

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