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Resounding Yosemite

#1558d6
Notes

Resounding Yosemite (#1558D6) 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 (219°, 82%, 46%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#1558d6
RGB
rgb(21, 88, 214)
HSL
hsl(219, 82%, 46%)
HWB
hwb(219 8% 16%)
OKLCH
oklch(50.4% 0.204 261.7)
P3
color(display-p3 0.1660 0.3399 0.8092)
HSV
hsv(219, 90%, 84%)
LAB
lab(41.20% 29.12 -69.85)
LCH
lch(41.20% 75.67 292.63)
CMYK
cmyk(90%, 59%, 0%, 16%)

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.

Yosemite
noun

The California national park in the Sierra Nevada — and the saturated deep blue of Half Dome's eastern shadow at sunset and the Yosemite Valley sky framed by El Capitan. Yosemite refers to the Yosemite Valley sky at sunset: a saturated, slightly cool deep blue with the optical depth of high-altitude desert 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.

#1558d6
Original
#006ada
Protanopia
#0059d4
Deuteranopia
#00788e
Tritanopia
#535353
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
6.18:1
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
3.40:1

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
##1558D6
Display P3
Display P3
color(display-p3 0.1660 0.3399 0.8092)
P3 has visible headroomOKLCH chroma 0.204

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

Related Colors

Canvas