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Senatorial Manchuria

#3f7cfa
Notes

Senatorial Manchuria (#3F7CFA) is a true azure with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (220°, 95%, 61%) places it in the highly saturated band at a mid lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#3f7cfa
RGB
rgb(63, 124, 250)
HSL
hsl(220, 95%, 61%)
HWB
hwb(220 25% 2%)
OKLCH
oklch(61.5% 0.199 262.6)
HSV
hsv(220, 75%, 98%)
LAB
lab(54.42% 23.14 -68.58)
LCH
lch(54.42% 72.38 288.65)
CMYK
cmyk(75%, 50%, 0%, 2%)

Etymology

Senatorial
adjective

Latin senātōrius, of the senator — adjectival suffix. As a color modifier, senatorial implies a saturated-and-aristocratic-and-Roman-Republic quality, the deep-rich color of Roman-Senate toga praetexta purple-bordered ceremonial-citizen-class livery. Sits at the bold-and-aristocratic end of the grid, parallel to patrician and imperial.

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.

#3f7cfa
Original
#2b8bff
Protanopia
#007af7
Deuteranopia
#009aaf
Tritanopia
#787878
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
3.84:1
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
5.47:1

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