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Strong Daylily

#ef3e0c
Notes

Strong Daylily (#EF3E0C) is a true red 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 (13°, 90%, 49%) 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 cyan. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#ef3e0c
RGB
rgb(239, 62, 12)
HSL
hsl(13, 90%, 49%)
HWB
hwb(13 5% 6%)
OKLCH
oklch(62.7% 0.219 34.2)
P3
color(display-p3 0.8642 0.3040 0.1584)
HSV
hsv(13, 95%, 94%)
LAB
lab(53.84% 65.31 62.89)
LCH
lch(53.84% 90.66 43.92)
CMYK
cmyk(0%, 74%, 95%, 6%)

Etymology

Strong
adjective

Old English strang, firm, vigorous — applied to color since the sixteenth century. Strong red, strong tea: a color at full strength is the maximum saturation the medium can produce. Sits at the saturated mid corner of the grid, parallel to bold in usage but slightly more focused on pigment density than on assertion.

Daylily
noun

The genus Hemerocallisday-beauty in Greek — perennial lily-relatives whose individual flowers bloom for a single day before wilting. The color refers to a fresh orange daylily H. fulva on a roadside: a saturated, slightly red orange with the satin finish of trumpet-shaped flower. Brighter than tangerine, with the ephemeral weight of a flower whose bloom lasts hours.

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.

#ef3e0c
Original
#766800
Protanopia
#a18f00
Deuteranopia
#ff0037
Tritanopia
#606060
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).
AA Largeon White
3.91:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
5.36:1

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
##EF3E0C
Display P3
Display P3
color(display-p3 0.8642 0.3040 0.1584)
P3 has visible headroomOKLCH chroma 0.219

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