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Tracer Tsuchi

#f3bf3a
Notes

Tracer Tsuchi (#F3BF3A) 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 (43°, 89%, 59%) 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
#f3bf3a
RGB
rgb(243, 191, 58)
HSL
hsl(43, 89%, 59%)
HWB
hwb(43 23% 5%)
OKLCH
oklch(83.0% 0.153 86.1)
HSV
hsv(43, 76%, 95%)
LAB
lab(79.97% 6.41 69.67)
LCH
lch(79.97% 69.96 84.75)
CMYK
cmyk(0%, 21%, 76%, 5%)

Etymology

Tracer
adjective

Old French tracier, to trace — sharing root with English trace and track. As a color modifier, tracer implies a saturated-and-streak-of-light quality, the bright color of military-tracer-round and long-exposure-photography light-trail visual streak. Sits at the bright-and-active end of the grid, parallel to flashing and streaking in usage.

Tsuchi
noun

The Japanese word for earth or soil — used for the warm pink-tan of clay-walled tsuchi-kabe of Japanese farmhouses and the unfinished plaster of Kyoto teahouses. The color refers to a freshly applied tsuchi-kabe wall: a soft, slightly muted warm pink-tan with the matte finish of mud-and-straw plaster. Drier than terracotta.

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.

#f3bf3a
Original
#d7be22
Protanopia
#e3cc41
Deuteranopia
#ffaea5
Tritanopia
#c0c0c0
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
1.70:1
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
12.32:1

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