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Rousing Hazel

#efb52d
Notes

Rousing Hazel (#EFB52D) 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 (42°, 86%, 56%) 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
#efb52d
RGB
rgb(239, 181, 45)
HSL
hsl(42, 86%, 56%)
HWB
hwb(42 18% 6%)
OKLCH
oklch(80.6% 0.154 83.2)
HSV
hsv(42, 81%, 94%)
LAB
lab(77.04% 9.48 71.18)
LCH
lch(77.04% 71.80 82.41)
CMYK
cmyk(0%, 24%, 81%, 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.

Hazel
noun

The tree Corylus avellana and its nut, but as a color name hazel refers most often to the human eye — an iris that combines low pigment with light scatter to produce a warm, slightly amber gold-brown. Also the flexible wood used for medieval coppice work and divining rods. The color is the cross-section of a hazelnut: a soft tan with the slight warmth of dried plant tissue.

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

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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.

#efb52d
Original
#cdb507
Protanopia
#dbc435
Deuteranopia
#ffa39c
Tritanopia
#b8b8b8
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
1.86:1
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
11.32:1

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