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Settled Cadet

#599da5
Notes

Settled Cadet (#599DA5) is a true cyan 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 (186°, 30%, 50%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#599da5
RGB
rgb(89, 157, 165)
HSL
hsl(186, 30%, 50%)
HWB
hwb(186 35% 35%)
OKLCH
oklch(65.4% 0.070 205.4)
P3
color(display-p3 0.4128 0.6091 0.6412)
HSV
hsv(186, 46%, 65%)
LAB
lab(60.74% -19.35 -10.89)
LCH
lch(60.74% 22.21 209.37)
CMYK
cmyk(46%, 5%, 0%, 35%)

Etymology

Settled
adjective

The past participle of settle, to come to rest — used as a color modifier since the seventeenth century for hues that read as stabilized after a process. Settled green, settled brown: moderate saturation combined with optical permanence. Sits at the crisp-bucket alongside steady and composed.

Cadet
noun

A pale gray-blue named for the dress uniform of military cadets — particularly the West Point cadet uniform and the British Royal Military College's traditional grays. The color refers to a cadet-uniform fabric: a soft, slightly muted gray-blue with the matte finish of regulation serge wool. Cooler than slate, warmer than steel, with the institutional weight of pre-officer formal dress.

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.

#599da5
Original
#9398a6
Protanopia
#878ea5
Deuteranopia
#32a29f
Tritanopia
#8f8f8f
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
3.09:1
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
6.79:1

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
##599DA5
Display P3
Display P3
color(display-p3 0.4128 0.6091 0.6412)
Inside sRGBOKLCH chroma 0.070

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.

Related Colors

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