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True Quilt Indigo

#5a63cd
Notes

True Quilt Indigo (#5A63CD) 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 (235°, 53%, 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#5a63cd
RGB
rgb(90, 99, 205)
HSL
hsl(235, 53%, 58%)
HWB
hwb(235 35% 20%)
OKLCH
oklch(54.8% 0.162 276.0)
HSV
hsv(235, 56%, 80%)
LAB
lab(46.32% 27.27 -56.25)
LCH
lch(46.32% 62.51 295.86)
CMYK
cmyk(56%, 52%, 0%, 20%)

Etymology

True
adjective

Old English trēowe, faithful — used as a color modifier since the seventeenth century for hues that read as the canonical version of their family. True red, true blue: the saturation is full, the hue is neither shifted nor adulterated. Sits at the center of the bold and crisp buckets, marking the unequivocal middle of any chromatic family.

Quilt
modifier

Old French cuilte, padded-cushion. As a color modifier, quilt implies a hand-quilted-padded-textile quality, the visual register of American-and-English-quilt hand-quilted-and-padded patchwork-and-coverlet hand-quilted-and-padded textile surfaces under American-and-English hand-quilted-and-padded textile workshop-light. Sits at the modifier-and-texture end of the grid, parallel to tufted and flock 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.

#5a63cd
Original
#2973d1
Protanopia
#1169cb
Deuteranopia
#197b8e
Tritanopia
#696969
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
5.12:1
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
4.10:1

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