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Robust Omen violet

#7b2bd7
Notes

Robust Omen violet (#7B2BD7) is a true indigo with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (268°, 68%, 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#7b2bd7
RGB
rgb(123, 43, 215)
HSL
hsl(268, 68%, 51%)
HWB
hwb(268 17% 16%)
OKLCH
oklch(50.7% 0.238 298.1)
P3
color(display-p3 0.4457 0.1895 0.8117)
HSV
hsv(268, 80%, 84%)
LAB
lab(39.32% 65.24 -73.24)
LCH
lch(39.32% 98.09 311.69)
CMYK
cmyk(43%, 80%, 0%, 16%)

Etymology

Robust
adjective

From the Latin robustus, of oak — implying strength combined with substance. As a color modifier, robust describes saturation combined with body: a robust burgundy, a robust olive. Sits in the bold-and-warm corner alongside strong and solid, with the slightly textural implication of a color that has substance behind the pigment.

Omen
modifier

Latin omen, prophetic-sign-or-portent. As a color modifier, omen implies a prophetic-sign-and-augur-and-portent quality, the visual register of Roman-augur-omen-and-Etruscan-haruspex hand-prophetic-sign-and-augur-and-portent Roman-augur-omen-and-Etruscan-haruspex-and-bird-flight omen-and-prophetic-sign-and-augur surfaces under Roman-augur-omen-and-Etruscan-haruspex-and-bird-flight Capitoline-Hill-and-Etruscan-templum prophetic-sign-light. Sits at the modifier-and-myth end of the grid, parallel to sigil and rune in usage.

violet
noun

Viola odorata, the European sweet violet — small, fragrant, and the original meaning of the color name in English (the Violet of the rainbow). The color refers to a fresh sweet violet blossom in late winter: a saturated, slightly red-shifted deep blue-purple with the matte finish of small five-petaled flower. Cooler than amethyst, warmer than indigo, with the perfumed weight of a flower used in Roman garlands and Victorian eau de toilette.

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.

#7b2bd7
Original
#005ddc
Protanopia
#005bd4
Deuteranopia
#635c82
Tritanopia
#484848
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
6.63:1
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
3.17:1

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
##7B2BD7
Display P3
Display P3
color(display-p3 0.4457 0.1895 0.8117)
P3 has visible headroomOKLCH chroma 0.238

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

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