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Replete Vita Indigo

#516fd9
Notes

Replete Vita Indigo (#516FD9) 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 (227°, 64%, 58%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#516fd9
RGB
rgb(81, 111, 217)
HSL
hsl(227, 64%, 58%)
HWB
hwb(227 32% 15%)
OKLCH
oklch(57.4% 0.165 268.8)
P3
color(display-p3 0.3422 0.4320 0.8237)
HSV
hsv(227, 63%, 85%)
LAB
lab(49.65% 22.14 -57.76)
LCH
lch(49.65% 61.86 290.98)
CMYK
cmyk(63%, 49%, 0%, 15%)

Etymology

Replete
adjective

Latin replētus, filled — past-participle of replēre. As a color modifier, replete implies a saturated-and-fully-pigmented quality where the hue is completely loaded with its source pigment. Sits at the bold-and-saturated end of the grid, parallel to brimming and suffused in usage.

Vita
modifier

Latin vita, life-or-living. As a color modifier, vita implies a Latin-life-and-living-quality quality, the visual register of Roman-vita-and-dolce-vita-Latin-life hand-Latin-life-and-living-quality Roman-vita-and-dolce-vita-Latin-life-and-Vergilian-pastoral vita-and-Latin-life-and-living-quality surfaces under Roman-vita-and-dolce-vita-Latin-life-and-Vergilian-pastoral Augustan-Rome-and-Renaissance-Italy living-Roman-light. Sits at the modifier-and-Latin end of the grid, parallel to amor and via in usage.

Indigo
noun

Indigofera tinctoria, the South Asian legume whose leaves yield the deep blue dye that has clothed humanity for at least four thousand years — Egyptian linen, Mayan textile, the slave-grown plantations of Carolina. The color refers to a freshly indigo-dyed cotton thread: a saturated, slightly violet-shifted deep blue with the slight lustre of a fiber surface oxidized in air. Deeper than cobalt, cooler than royal.

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.

#516fd9
Original
#377cdd
Protanopia
#1870d7
Deuteranopia
#00879a
Tritanopia
#707070
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
4.54:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAon Black
4.63:1

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
##516FD9
Display P3
Display P3
color(display-p3 0.3422 0.4320 0.8237)
P3 has subtle headroomOKLCH chroma 0.165

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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