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Hooded Manchuria

#1f3197
Notes

Hooded Manchuria (#1F3197) is a true blue with a jewel character. It carries the deep, saturated richness of a gemstone. Authoritative and slightly formal, it works well for type and heavy UI elements. Its HSL profile (231°, 66%, 36%) 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
#1f3197
RGB
rgb(31, 49, 151)
HSL
hsl(231, 66%, 36%)
HWB
hwb(231 12% 41%)
OKLCH
oklch(37.4% 0.167 268.6)
P3
color(display-p3 0.1368 0.1903 0.5696)
HSV
hsv(231, 79%, 59%)
LAB
lab(25.93% 31.31 -57.57)
LCH
lch(25.93% 65.53 298.54)
CMYK
cmyk(79%, 68%, 0%, 41%)

Etymology

Hooded
adjective

Old English hōd, hood — past-participle of hood, sharing root with German Hut (hat). As a color modifier, hooded implies the deep-and-veiled-and-fabric-shrouded quality of monk-and-friar enveloping-cowled-cloak silhouette in Cistercian-and-Benedictine monastic tradition. Sits at the deep-and-veiled end of the grid, parallel to cloaked and mantled with monastic register.

Manchuria
noun

The northeastern Chinese region — historically the homeland of the Manchu people — and the deep blue of Manchurian winter sky and the Songhua River at Harbin. Manchuria refers to a Harbin Ice Festival ice sculpture in Manchurian midwinter sky: a saturated, slightly cool deep blue.

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.

#1f3197
Original
#00439a
Protanopia
#003895
Deuteranopia
#004c5f
Tritanopia
#353535
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
10.80:1
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
1.94:1

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
##1F3197
Display P3
Display P3
color(display-p3 0.1368 0.1903 0.5696)
P3 has subtle headroomOKLCH chroma 0.167

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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