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Bulky Blueschist

#3f69cb
Notes

Bulky Blueschist (#3F69CB) is a true 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 (222°, 57%, 52%) 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
#3f69cb
RGB
rgb(63, 105, 203)
HSL
hsl(222, 57%, 52%)
HWB
hwb(222 25% 20%)
OKLCH
oklch(54.3% 0.159 264.3)
HSV
hsv(222, 69%, 80%)
LAB
lab(46.27% 18.07 -55.26)
LCH
lch(46.27% 58.13 288.11)
CMYK
cmyk(69%, 48%, 0%, 20%)

Etymology

Bulky
adjective

Old Norse búlki, cargo / mass — adjectival suffix -y. As a color modifier, bulky implies a saturated-and-massive-and-occupying quality where the hue takes up visual space with broad-and-heavy presence. Sits at the bold-and-weighty end of the grid, parallel to hefty and substantial in usage.

Blueschist
noun

A metamorphic rock — formed under low-temperature high-pressure conditions in subduction zones — characterized by the deep blue of glaucophane amphibole. The color refers to a freshly cut blueschist specimen: a soft, slightly cool deep blue with the metallic-gray-fibrous finish of crystallized amphibole.

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

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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.

#3f69cb
Original
#3474cf
Protanopia
#0c68c9
Deuteranopia
#008090
Tritanopia
#676767
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
5.13:1
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
4.09:1

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