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Rousing Beeswing

#efab2b
Notes

Rousing Beeswing (#EFAB2B) is a true amber 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 (39°, 86%, 55%) 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
#efab2b
RGB
rgb(239, 171, 43)
HSL
hsl(39, 86%, 55%)
HWB
hwb(39 17% 6%)
OKLCH
oklch(78.6% 0.153 77.5)
P3
color(display-p3 0.8974 0.6817 0.2854)
HSV
hsv(39, 82%, 94%)
LAB
lab(74.61% 14.69 69.69)
LCH
lch(74.61% 71.22 78.10)
CMYK
cmyk(0%, 28%, 82%, 6%)

Etymology

Rousing
adjective

Old English rūsan, to rush — present-participle of rouse. As a color modifier, rousing implies a saturated-and-wakening-and-active quality, the bright color of dawn-chorus-and-morning-bell atmospheric-and-aural stimulation. Sits at the bright-and-active end of the grid, parallel to awakening and invigorating in usage.

Beeswing
noun

The thin, glassy crust that forms on the inside of a long-aged port or sherry bottle — fragments break loose like the wings of bees as the wine ages. The color refers to a beeswing-rich vintage port: a deep, slightly muted warm gold-brown with the optical complexity of long-cellar-aged fortified wine.

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.

#efab2b
Original
#c4ae08
Protanopia
#d5be31
Deuteranopia
#ff9893
Tritanopia
#b0b0b0
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
1.99:1
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
10.53:1

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
##EFAB2B
Display P3
Display P3
color(display-p3 0.8974 0.6817 0.2854)
P3 has subtle headroomOKLCH chroma 0.153

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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