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Useful Jaipur

#645496
Notes

Useful Jaipur (#645496) is a true indigo 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 (255°, 28%, 46%) places it in the muted 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
#645496
RGB
rgb(100, 84, 150)
HSL
hsl(255, 28%, 46%)
HWB
hwb(255 33% 41%)
OKLCH
oklch(49.2% 0.104 293.4)
P3
color(display-p3 0.3819 0.3317 0.5715)
HSV
hsv(255, 44%, 59%)
LAB
lab(40.00% 22.23 -34.00)
LCH
lch(40.00% 40.62 303.18)
CMYK
cmyk(33%, 44%, 0%, 41%)

Etymology

Useful
adjective

Latin ūsus, use — adjectival suffix -ful. As a color modifier, useful implies a clear-and-purpose-serving quality where the hue carries the visual register of helpful-and-supporting design-element. Sits at the crisp-and-functional end of the grid, parallel to practical and serviceable in usage.

Jaipur
noun

The Indian Pink City of Rajasthan, capital of the former Jaipur State of the Rajputana — historical depot for the lapis lazuli trade between Afghanistan and the courts of Hindustan, and home of Sanganeri indigo block-printing. Jaipur color refers to a Sanganeri-block-printed muslin: a saturated, slightly cool deep blue-violet with the matte finish of multi-bath fermentation indigo on hand-printed cotton.

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.

#645496
Original
#3f5f98
Protanopia
#415d94
Deuteranopia
#58606e
Tritanopia
#5c5c5c
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
6.46:1
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
3.25:1

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
##645496
Display P3
Display P3
color(display-p3 0.3819 0.3317 0.5715)
P3 has subtle headroomOKLCH chroma 0.104

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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