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Withheld Tiānlán

#406566
Notes

Withheld Tiānlán (#406566) is a deep 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 (182°, 23%, 33%) places it in the muted band at a dark lightness. It works well as a headline, icon, or deep background in an otherwise light layout, pairing cleanly with cream, bone, and warm neutrals. 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
#406566
RGB
rgb(64, 101, 102)
HSL
hsl(182, 23%, 33%)
HWB
hwb(182 25% 60%)
OKLCH
oklch(47.9% 0.042 198.0)
P3
color(display-p3 0.2834 0.3923 0.3977)
HSV
hsv(182, 37%, 40%)
LAB
lab(40.17% -12.84 -4.75)
LCH
lch(40.17% 13.70 200.31)
CMYK
cmyk(37%, 1%, 0%, 60%)

Etymology

Withheld
adjective

Old English with-haldan, to hold-back — past-participle of withhold. As a color modifier, withheld implies a hushed-and-pulled-back-and-not-fully-given quality where the hue carries the visual register of intentionally-restricted-and-reserved color-presentation. Sits at the hushed-and-restrained end of the grid, parallel to restrained and modulated in usage.

Tiānlán
noun

Chinese for sky-blue — combining tiān (sky) and lán (blue). Used for the pale blue of clear-sky painting in Chinese landscape tradition and the tiānlán-cí (sky-blue glaze) of Song-dynasty porcelain. The color refers to a Song tiānlán glaze: a soft, slightly cool pale blue with the high gloss of fired ceramic glaze.

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.

#406566
Original
#606266
Protanopia
#595c66
Deuteranopia
#316765
Tritanopia
#5d5d5d
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
6.42:1
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
3.27:1

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
##406566
Display P3
Display P3
color(display-p3 0.2834 0.3923 0.3977)
Inside sRGBOKLCH chroma 0.042

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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