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Booming Roseate

#840c64
Notes

Booming Roseate (#840C64) is a deep magenta 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 (316°, 83%, 28%) places it in the highly saturated band at a dark 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 green. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#840c64
RGB
rgb(132, 12, 100)
HSL
hsl(316, 83%, 28%)
HWB
hwb(316 5% 48%)
OKLCH
oklch(41.6% 0.170 342.8)
HSV
hsv(316, 91%, 52%)
LAB
lab(29.64% 53.75 -18.78)
LCH
lch(29.64% 56.94 340.75)
CMYK
cmyk(0%, 91%, 24%, 48%)

Etymology

Booming
adjective

Imitative-onomatopoeic origin — present-participle of boom, sharing root with Dutch bommen. As a color modifier, booming implies a saturated-and-loud-and-confident quality where the hue announces itself with full visual amplitude. Sits at the bold-and-resonant end of the grid, parallel to resounding and thunderous.

Roseate
noun

Latin rosātus, rosy — adopted into English for any naturally pink-magenta colored phenomenon, particularly the roseate spoonbill (Platalea ajaja) of Florida and Caribbean coastal wetlands. Roseate color refers to a Platalea ajaja breast-and-shoulder feather field in late-afternoon light: a saturated, slightly cool deep magenta with the velvet finish of carotenoid-pigmented feather barbs over melanin-substrate flight feathers.

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.

#840c64
Original
#1e3a66
Protanopia
#454c62
Deuteranopia
#8d0d3a
Tritanopia
#2c2c2c
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).
AAAon White
9.47:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
2.22:1

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