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Buttressed Nutmeg Royal

#6585da
Notes

Buttressed Nutmeg Royal (#6585DA) 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 (224°, 61%, 63%) 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
#6585da
RGB
rgb(101, 133, 218)
HSL
hsl(224, 61%, 63%)
HWB
hwb(224 40% 15%)
OKLCH
oklch(63.1% 0.133 267.0)
P3
color(display-p3 0.4218 0.5180 0.8309)
HSV
hsv(224, 54%, 85%)
LAB
lab(56.69% 12.95 -47.03)
LCH
lch(56.69% 48.78 285.40)
CMYK
cmyk(54%, 39%, 0%, 15%)

Etymology

Buttressed
adjective

Old French bouterez, thrusting-mass — past-participle of buttress, derived from bouter (to thrust). As a color modifier, buttressed implies a saturated-and-architecturally-supported quality, the deep-rich color of Gothic-Cathedral flying-buttress-and-rib-vault stone-architecture. Sits at the bold-and-fortified end of the grid, parallel to fortified and reinforced.

Nutmeg
modifier

Latin nux-muscata, musk-nut. As a color modifier, nutmeg implies a warm-and-grated-and-Banda-Islands-musk-nut quality, the visual register of Banda-Islands-and-Spice-Islands-nutmeg hand-warm-and-grated-and-Banda-Islands-musk-nut Banda-Islands-and-Spice-Islands-nutmeg-and-Maluku nutmeg-and-warm-and-grated surfaces under Banda-Islands-and-Spice-Islands-nutmeg-and-Maluku Banda-Islands-and-Run-and-Maluku Spice-Islands-musk-light. Sits at the modifier-and-flavor end of the grid, parallel to clove and mace in usage.

Royal
noun

The blue of European royal court dress and regalia from the late seventeenth century forward — the color of British peers' robes, French royal sashes, the lining of the crown-jewel cases. The color refers to a saturated, slightly violet-shifted blue with the matte finish of velvet or melton wool dyed to maximum intensity: deeper than cornflower, warmer than ultramarine, with the heraldic weight of a color reserved for monarchs and the official Crown.

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.

#6585da
Original
#628edd
Protanopia
#5583d8
Deuteranopia
#2797a5
Tritanopia
#848484
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
3.55:1
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
5.92:1

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
##6585DA
Display P3
Display P3
color(display-p3 0.4218 0.5180 0.8309)
P3 has subtle headroomOKLCH chroma 0.133

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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