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Grounded Neel

#427bd6
Notes

Grounded Neel (#427BD6) is a true azure 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 (217°, 64%, 55%) 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
#427bd6
RGB
rgb(66, 123, 214)
HSL
hsl(217, 64%, 55%)
HWB
hwb(217 26% 16%)
OKLCH
oklch(59.0% 0.152 259.4)
HSV
hsv(217, 69%, 84%)
LAB
lab(52.04% 11.21 -52.27)
LCH
lch(52.04% 53.46 282.11)
CMYK
cmyk(69%, 43%, 0%, 16%)

Etymology

Grounded
adjective

Old English grund, bottom / foundation — past-participle of ground. As a color modifier, grounded implies a saturated-and-foundational quality where the hue anchors the surrounding palette through its weighty presence. Sits at the bold-and-balanced end of the grid, parallel to centered and anchored.

Neel
noun

The Hindi-Urdu word for indigo — borrowed from the Sanskrit nīla (dark blue) — and the source of the English aniline and many South Asian textile-dye terms. The color refers to a freshly neel-dyed Indian cotton: a saturated, slightly cool deep blue with the matte finish of plant-and-mordant dye. The South Asian cousin of indigo.

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

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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.

#427bd6
Original
#4f83da
Protanopia
#3676d4
Deuteranopia
#00909e
Tritanopia
#757575
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).
AA Largeon White
4.17:1
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
5.04:1

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