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Buzzing Aurora

#f38904
Notes

Buzzing Aurora (#F38904) is a true orange 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 (33°, 97%, 48%) 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 azure. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#f38904
RGB
rgb(243, 137, 4)
HSL
hsl(33, 97%, 48%)
HWB
hwb(33 2% 5%)
OKLCH
oklch(73.0% 0.170 60.0)
P3
color(display-p3 0.8970 0.5579 0.2045)
HSV
hsv(33, 98%, 95%)
LAB
lab(67.25% 33.55 72.73)
LCH
lch(67.25% 80.10 65.24)
CMYK
cmyk(0%, 44%, 98%, 5%)

Etymology

Buzzing
adjective

The progressive participle of buzz — borrowed metaphorically as a color word since the late twentieth century for hues that read as visually loud and slightly destabilizing. Buzzing yellow, buzzing magenta: the implication is saturation pushed past comfortable into the realm of optical agitation. Sits at the bright-bucket extreme alongside electric.

Aurora
noun

The atmospheric phenomenon of charged particles colliding with the upper atmosphere — particularly the aurora borealis (northern lights) at high latitudes. While auroras span green and violet, the warm-orange variant occurs when particles collide with high-altitude atomic nitrogen. The color refers to an orange auroral curtain: a soft, slightly red orange with the optical translucency of upper-atmosphere emission.

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.

#f38904
Original
#aa9500
Protanopia
#c3ad04
Deuteranopia
#ff7075
Tritanopia
#969696
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
2.50:1
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
8.39:1

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
##F38904
Display P3
Display P3
color(display-p3 0.8970 0.5579 0.2045)
P3 has subtle headroomOKLCH chroma 0.170

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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