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Flaming Tsuchi

#efbb1c
Notes

Flaming Tsuchi (#EFBB1C) 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 (45°, 87%, 52%) 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 blue. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#efbb1c
RGB
rgb(239, 187, 28)
HSL
hsl(45, 87%, 52%)
HWB
hwb(45 11% 6%)
OKLCH
oklch(81.6% 0.162 87.6)
P3
color(display-p3 0.9054 0.7413 0.2746)
HSV
hsv(45, 88%, 94%)
LAB
lab(78.45% 5.93 76.72)
LCH
lch(78.45% 76.95 85.58)
CMYK
cmyk(0%, 22%, 88%, 6%)

Etymology

Flaming
adjective

Old French flamme, flame — present-participle of flame. As a color modifier, flaming implies a saturated-and-fire-and-bright-color quality, the bright color of autumn-Maple-and-Oak deciduous-foliage fall-color and Yule-log fire emission. Sits at the bright-and-warm end of the grid, parallel to fiery and blazing 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

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.

#efbb1c
Original
#d3ba00
Protanopia
#e0c829
Deuteranopia
#ffa9a0
Tritanopia
#bbbbbb
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
1.78:1
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
11.80:1

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
##EFBB1C
Display P3
Display P3
color(display-p3 0.9054 0.7413 0.2746)
P3 has subtle headroomOKLCH chroma 0.162

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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