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Welcoming Vasilek

#668bc9
Notes

Welcoming Vasilek (#668BC9) is a true azure with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (218°, 48%, 59%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#668bc9
RGB
rgb(102, 139, 201)
HSL
hsl(218, 48%, 59%)
HWB
hwb(218 40% 21%)
OKLCH
oklch(63.5% 0.103 260.4)
P3
color(display-p3 0.4303 0.5411 0.7691)
HSV
hsv(218, 49%, 79%)
LAB
lab(57.56% 4.34 -36.07)
LCH
lch(57.56% 36.33 276.86)
CMYK
cmyk(49%, 31%, 0%, 21%)

Etymology

Welcoming
adjective

Old English wel-cuman, well-coming — present-participle of welcome. As a color modifier, welcoming implies a clear-and-inviting-and-warm quality where the hue carries the visual register of cordial-and-hospitable color-tone. Sits at the crisp-and-cheerful end of the grid, parallel to hospitable and inviting in usage.

Vasilek
noun

The Russian word for cornflower (Centaurea cyanus) — and the saturated bright blue of cornflower fields among Russian wheat. Vasilek-blue is the unifying field-flower color of Russian rural summer. The color refers to a fresh cornflower at peak bloom in a Russian wheat field: a saturated, slightly cool bright blue.

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.

#668bc9
Original
#738fcc
Protanopia
#6886c8
Deuteranopia
#3a98a1
Tritanopia
#888888
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
3.44:1
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
6.10:1

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
##668BC9
Display P3
Display P3
color(display-p3 0.4303 0.5411 0.7691)
P3 has subtle headroomOKLCH chroma 0.103

Moderately saturated colors gain a small bump in P3 — the difference is usually visible side-by-side on wide-gamut hardware but won't change the character of the color.

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