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Shadowy Perovskia

#172b56
Notes

Shadowy Perovskia (#172B56) is a deep 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 (221°, 58%, 21%) places it in the balanced 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#172b56
RGB
rgb(23, 43, 86)
HSL
hsl(221, 58%, 21%)
HWB
hwb(221 9% 66%)
OKLCH
oklch(29.8% 0.082 263.5)
P3
color(display-p3 0.1082 0.1666 0.3257)
HSV
hsv(221, 73%, 34%)
LAB
lab(18.28% 8.40 -28.49)
LCH
lch(18.28% 29.70 286.43)
CMYK
cmyk(73%, 50%, 0%, 66%)

Etymology

Shadowy
adjective

Old English sceaduwig, full of shadow — adjectival form of shadow. As a color modifier, shadowy implies a deep-and-obscured quality where the hue is partially-occluded by intervening shade. Sits at the deep-and-veiled end of the grid, parallel to shaded and cloaked in usage.

Perovskia
noun

The genus PerovskiaRussian sage, the Central Asian woody perennial whose silver-leaved deep blue-violet flower spikes brave drought and cold. The color refers to a fresh Perovskia atriplicifolia in late summer: a saturated, slightly cool deep blue-violet with the matte finish of small clustered mint-family flowers along upright stems.

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.

#172b56
Original
#153058
Protanopia
#092a55
Deuteranopia
#00353c
Tritanopia
#2a2a2a
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).
AAAon White
13.85:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
Failon Black
1.52:1

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
##172B56
Display P3
Display P3
color(display-p3 0.1082 0.1666 0.3257)
P3 has subtle headroomOKLCH chroma 0.082

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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