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Resounding Bluebell

#275bd0
Notes

Resounding Bluebell (#275BD0) 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 (222°, 68%, 48%) 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
#275bd0
RGB
rgb(39, 91, 208)
HSL
hsl(222, 68%, 48%)
HWB
hwb(222 15% 18%)
OKLCH
oklch(50.9% 0.190 263.2)
HSV
hsv(222, 81%, 82%)
LAB
lab(41.95% 26.07 -65.17)
LCH
lch(41.95% 70.19 291.80)
CMYK
cmyk(81%, 56%, 0%, 18%)

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.

Bluebell
noun

Hyacinthoides non-scripta, the wild English bluebell that carpets ancient British woodlands in late April — half the world's population grows in the United Kingdom. The color refers to a freshly opened bluebell flower: a saturated, slightly violet-shifted blue with the matte finish of a downward-hanging bell. Cooler than periwinkle, warmer than cobalt, with the seasonal weight of a flower so closely tied to one country's spring landscape.

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.

#275bd0
Original
#006bd4
Protanopia
#005cce
Deuteranopia
#00788c
Tritanopia
#585858
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
6.01:1
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
3.49:1

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