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Decisive Kumquat

#b43701
Notes

Decisive Kumquat (#B43701) is a true orange with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (18°, 99%, 35%) 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
#b43701
RGB
rgb(180, 55, 1)
HSL
hsl(18, 99%, 35%)
HWB
hwb(18 0% 29%)
OKLCH
oklch(51.8% 0.169 37.9)
HSV
hsv(18, 99%, 71%)
LAB
lab(41.91% 48.76 53.36)
LCH
lch(41.91% 72.29 47.58)
CMYK
cmyk(0%, 69%, 99%, 29%)

Etymology

Decisive
adjective

From the Latin decidere, to cut off — used as a modifier for colors that read as firm and final. Decisive black, decisive red: the implication is that the color has settled on its position and won't drift. Sits in the bold-bucket corner alongside resolute, with a slightly sharper edge.

Kumquat
noun

Citrus japonica, the small East Asian citrus eaten whole — sweet rind, tart pulp. The color refers to a fresh Cantonese-region kumquat in early winter: a saturated, slightly red orange with the satin finish of small citrus rind. Warmer than mikan, deeper than mandarino. The smallest cultivated citrus.

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.

#b43701
Original
#5d5100
Protanopia
#7c6d00
Deuteranopia
#c7002f
Tritanopia
#4e4e4e
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).
AAon White
6.02:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.49:1

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