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Imposing Brindisi

#631f6c
Notes

Imposing Brindisi (#631F6C) is a deep violet with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (293°, 55%, 27%) places it in the balanced band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#631f6c
RGB
rgb(99, 31, 108)
HSL
hsl(293, 55%, 27%)
HWB
hwb(293 12% 58%)
OKLCH
oklch(37.9% 0.139 322.8)
P3
color(display-p3 0.3576 0.1400 0.4096)
HSV
hsv(293, 71%, 42%)
LAB
lab(25.91% 41.56 -30.24)
LCH
lch(25.91% 51.40 323.96)
CMYK
cmyk(8%, 71%, 0%, 58%)

Etymology

Imposing
adjective

Latin impōnere, to place upon — present-participle of impose. As a color modifier, imposing implies a deep-and-massive-and-architectural quality, the dark cool-gray of Citadel-and-Cathedral monumental architecture against the sky. Sits at the deep-and-architectural end of the grid, parallel to towering and looming in scale.

Brindisi
noun

Italian Adriatic port city — once the Roman Brundisium, terminus of the Via Appia, and a major Phoenician-and-Roman purpura shellfish-dye production center. Brindisi color refers to a Brindisi-dyed Roman toga praetexta with its purple-edged border: a saturated, slightly cool deep violet with the matte finish of multi-bath murex-shellfish dye on multi-rolled woolen toga fabric.

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.

#631f6c
Original
#09386e
Protanopia
#2a406a
Deuteranopia
#652c43
Tritanopia
#333333
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
10.81:1
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
1.94:1

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
##631F6C
Display P3
Display P3
color(display-p3 0.3576 0.1400 0.4096)
P3 has subtle headroomOKLCH chroma 0.139

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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