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Combustive Khaki

#f49725
Notes

Combustive Khaki (#F49725) 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°, 90%, 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
#f49725
RGB
rgb(244, 151, 37)
HSL
hsl(33, 90%, 55%)
HWB
hwb(33 15% 4%)
OKLCH
oklch(75.6% 0.160 64.6)
HSV
hsv(33, 85%, 96%)
LAB
lab(70.53% 27.17 68.33)
LCH
lch(70.53% 73.53 68.32)
CMYK
cmyk(0%, 38%, 85%, 4%)

Etymology

Combustive
adjective

Latin combūstus, burnt — adjectival suffix -ive, derived from com-burere (to burn-up). As a color modifier, combustive implies a saturated-and-burning-active quality, the bright color of blast-furnace-and-foundry combustion-chamber emission. Sits at the bright-and-warm end of the grid, parallel to fiery and blazing in usage.

Khaki
noun

Hindi-Urdu khākī, dust-colored — adopted by the British Indian Army in the nineteenth century when colonial troops dyed their white uniforms with mud and tea to disappear into the landscape. The color is the dusty, slightly green-tinged tan of standard British khaki cloth: warmer than olive, drier than tan, with the institutional weight of a century of military uniforms.

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.

#f49725
Original
#b59f03
Protanopia
#cbb527
Deuteranopia
#ff8182
Tritanopia
#a3a3a3
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
2.26:1
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
9.30:1

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