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Sonorous Procyon Royal

#0465e0
Notes

Sonorous Procyon Royal (#0465E0) is a true azure with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (214°, 96%, 45%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#0465e0
RGB
rgb(4, 101, 224)
HSL
hsl(214, 96%, 45%)
HWB
hwb(214 2% 12%)
OKLCH
oklch(53.6% 0.203 258.8)
P3
color(display-p3 0.1684 0.3898 0.8479)
HSV
hsv(214, 98%, 88%)
LAB
lab(45.24% 23.99 -68.97)
LCH
lch(45.24% 73.03 289.18)
CMYK
cmyk(98%, 55%, 0%, 12%)

Etymology

Sonorous
adjective

Latin sonōrus, resounding — derived from sonus (sound). As a color modifier, sonorous implies a saturated-and-richly-vibrating quality where the hue carries the deep-resonance visual register of a cathedral-organ-pipe low-note. Sits at the bold-and-resonant end of the grid, parallel to resonant and deep in usage.

Procyon
modifier

Greek προκύων, before-the-dog. As a color modifier, procyon implies a Canis-Minor-and-bright-foretaste-of-Sirius quality, the visual register of Canis-Minor-Procyon-and-Winter-Triangle hand-Canis-Minor-and-bright-foretaste-of-Sirius Canis-Minor-Procyon-and-Winter-Triangle-and-Bortle-1-sky procyon-and-Canis-Minor-and-bright-foretaste surfaces under Canis-Minor-Procyon-and-Winter-Triangle-and-Bortle-1-sky January-and-February-winter-zenith winter-stellar-light. Sits at the modifier-and-cosmic end of the grid, parallel to rigel and altair in usage.

Royal
noun

The blue of European royal court dress and regalia from the late seventeenth century forward — the color of British peers' robes, French royal sashes, the lining of the crown-jewel cases. The color refers to a saturated, slightly violet-shifted blue with the matte finish of velvet or melton wool dyed to maximum intensity: deeper than cornflower, warmer than ultramarine, with the heraldic weight of a color reserved for monarchs and the official Crown.

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.

#0465e0
Original
#0075e4
Protanopia
#0062de
Deuteranopia
#008499
Tritanopia
#595959
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
5.33:1
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
3.94:1

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
##0465E0
Display P3
Display P3
color(display-p3 0.1684 0.3898 0.8479)
P3 has visible headroomOKLCH chroma 0.203

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

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