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Inviting Larkspur

#64a3de
Notes

Inviting Larkspur (#64A3DE) is a true azure with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (209°, 65%, 63%) 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
#64a3de
RGB
rgb(100, 163, 222)
HSL
hsl(209, 65%, 63%)
HWB
hwb(209 39% 13%)
OKLCH
oklch(69.7% 0.109 248.1)
P3
color(display-p3 0.4490 0.6329 0.8509)
HSV
hsv(209, 55%, 87%)
LAB
lab(65.10% -3.44 -36.03)
LCH
lch(65.10% 36.20 264.55)
CMYK
cmyk(55%, 27%, 0%, 13%)

Etymology

Inviting
adjective

Latin invītāre, to invite — present-participle of invite. As a color modifier, inviting implies a clear-and-cordial-and-encouraging quality where the hue carries the visual register of warm-inviting-and-encouraging entrance-foyer color tone. Sits at the crisp-and-cheerful end of the grid, parallel to welcoming and hospitable in usage.

Larkspur
noun

Delphinium consolida and its garden cousins — the tall spired wildflower of European meadows whose name means little lark for the spurred shape of its blossoms. The color refers to a fresh larkspur stalk in cottage-garden bloom: a saturated, slightly violet-shifted blue with the matte finish of multi-petaled flowers stacked along a single stem. Cooler than cornflower, warmer than periwinkle, with the literary weight of a flower in Tennyson and Heaney alike.

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.

#64a3de
Original
#8aa5e1
Protanopia
#7a99dd
Deuteranopia
#04b1b7
Tritanopia
#9a9a9a
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).
Failon White
2.68:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
7.84:1

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
##64A3DE
Display P3
Display P3
color(display-p3 0.4490 0.6329 0.8509)
P3 has subtle headroomOKLCH chroma 0.109

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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