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Resounding Verbena

#6647b9
Notes

Resounding Verbena (#6647B9) is a true indigo 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 (256°, 45%, 50%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#6647b9
RGB
rgb(102, 71, 185)
HSL
hsl(256, 45%, 50%)
HWB
hwb(256 28% 27%)
OKLCH
oklch(49.4% 0.171 291.4)
HSV
hsv(256, 62%, 73%)
LAB
lab(39.30% 40.50 -55.93)
LCH
lch(39.30% 69.05 305.91)
CMYK
cmyk(45%, 62%, 0%, 27%)

Etymology

Resounding
adjective

Latin resonāre, to echo back — present-participle of resound. As a color modifier, resounding implies a saturated-and-echoing-and-imposing quality where the hue reverberates visually like a cathedral-bell ring. Sits at the bold-and-resonant end of the grid, parallel to resonant and booming in usage.

Verbena
noun

The cultivated genus Verbena — particularly Verbena × hybrida, the trailing bedding plant in the Verbenaceae family with violet-and-magenta flat-topped cymes used in Mediterranean container gardens. Verbena color refers to a fully bloomed Verbena bonariensis cyme: a saturated, slightly cool deep blue-violet with the velvet finish of dense small four-petaled flowers. Slightly cooler than Vervain and warmer than Liatris.

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

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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.

#6647b9
Original
#005ebd
Protanopia
#005ab7
Deuteranopia
#4e6179
Tritanopia
#565656
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
6.63:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.17:1

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