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Sturdy Ares Royal

#566ee7
Notes

Sturdy Ares Royal (#566EE7) is a true blue with a vibrant character. It holds its own as a focal accent, carrying visual weight without tipping into neon territory. Its HSL profile (230°, 75%, 62%) 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
#566ee7
RGB
rgb(86, 110, 231)
HSL
hsl(230, 75%, 62%)
HWB
hwb(230 34% 9%)
OKLCH
oklch(58.5% 0.184 271.2)
HSV
hsv(230, 63%, 91%)
LAB
lab(50.57% 28.36 -64.17)
LCH
lch(50.57% 70.16 293.85)
CMYK
cmyk(63%, 52%, 0%, 9%)

Etymology

Sturdy
adjective

Old French estourdi, stunned, reckless — drifted in English to mean robust, well-built. Used as a color modifier since the seventeenth century for hues that read as durable and unfussy — the working browns of saddle leather, the working greens of pasture wool. Sits in the bold-and-warm corner alongside robust and solid.

Ares
modifier

Greek Ἄρης, god-of-war. As a color modifier, ares implies a war-god-and-iron-and-blood quality, the visual register of Olympian-Ares-and-Spartan-temple-Ares hand-war-god-and-iron-and-blood Olympian-Ares-and-Spartan-temple-and-Areopagus ares-and-war-god-and-iron-and-blood surfaces under Olympian-Ares-and-Spartan-temple-and-Areopagus Athenian-Acropolis-and-rocky-outcrop war-god-light. Sits at the modifier-and-myth end of the grid, parallel to zeus and atlas 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.

#566ee7
Original
#207feb
Protanopia
#0072e5
Deuteranopia
#008aa0
Tritanopia
#727272
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
4.39:1
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
4.78:1

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