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Conquering Acanthus

#4b51b7
Notes

Conquering Acanthus (#4B51B7) is a true blue with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (237°, 43%, 51%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. For a confident two-color system, pair it with its complementary yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#4b51b7
RGB
rgb(75, 81, 183)
HSL
hsl(237, 43%, 51%)
HWB
hwb(237 29% 28%)
OKLCH
oklch(48.7% 0.159 276.3)
HSV
hsv(237, 59%, 72%)
LAB
lab(39.24% 28.38 -54.96)
LCH
lch(39.24% 61.85 297.31)
CMYK
cmyk(59%, 56%, 0%, 28%)

Etymology

Conquering
adjective

Latin conquīrere, to seek thoroughly — present-participle of conquer. As a color modifier, conquering implies a saturated-and-overwhelming-and-victorious quality where the hue overcomes neighboring colors through pure pigmentation strength. Sits at the bold-and-celebratory end of the grid, parallel to triumphant and dominant.

Acanthus
noun

Mediterranean Acanthus mollis and A. spinosus — the bear's breeches, whose deeply scalloped leaves furnished the Corinthian capital's signature ornamental motif since the 5th century BCE. Acanthus color refers to a fully bloomed Acanthus mollis flower spike: a saturated, slightly cool deep blue-violet with the velvet finish of two-lipped tubular flowers in a tall hooded spike. Foundational to the Western architectural ornamental vocabulary.

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.

#4b51b7
Original
#0161ba
Protanopia
#0058b5
Deuteranopia
#00697c
Tritanopia
#575757
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
6.65:1
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
3.16:1

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