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Restrained Stokesia

#666e87
Notes

Restrained Stokesia (#666E87) is a true blue 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 (225°, 14%, 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#666e87
RGB
rgb(102, 110, 135)
HSL
hsl(225, 14%, 46%)
HWB
hwb(225 40% 47%)
OKLCH
oklch(54.1% 0.040 271.1)
P3
color(display-p3 0.4058 0.4304 0.5212)
HSV
hsv(225, 24%, 53%)
LAB
lab(46.61% 2.86 -14.74)
LCH
lch(46.61% 15.02 280.99)
CMYK
cmyk(24%, 19%, 0%, 47%)

Etymology

Restrained
adjective

Latin re-stringere, to pull back — past-participle of restrain. As a color modifier, restrained implies a hushed-and-pulled-back-and-controlled quality where the hue carries the visual register of intentionally-modulated-and-restricted color-amplitude treatment. Sits at the hushed-and-restrained end of the grid, parallel to modulated and withheld in usage.

Stokesia
noun

North American Stokes' aster (Stokesia laevis) — a southeastern-coastal-plain Asteraceae native cultivated as a ground-cover perennial with fringed lavender ray-flowers. Stokesia color refers to a fully opened Stokesia laevis flower head: a saturated, slightly cool deep blue-violet with the velvet finish of finely fringed ray-flowers around a paler central disk. Named for Jonathan Stokes, an English physician-botanist of the 18th century.

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.

#666e87
Original
#677088
Protanopia
#646d86
Deuteranopia
#5e7376
Tritanopia
#6e6e6e
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
5.07:1
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
4.15:1

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
##666E87
Display P3
Display P3
color(display-p3 0.4058 0.4304 0.5212)
Inside sRGBOKLCH chroma 0.040

This color sits well within the sRGB cube. P3 and sRGB share the gray axis and most desaturated tones, so a P3 display renders this identically to an sRGB display.

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