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Sensibly Manganite

#150620
Notes

Sensibly Manganite (#150620) is a deep indigo 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 (275°, 68%, 7%) 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 lime. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#150620
RGB
rgb(21, 6, 32)
HSL
hsl(275, 68%, 7%)
HWB
hwb(275 2% 87%)
OKLCH
oklch(16.4% 0.055 308.5)
P3
color(display-p3 0.0743 0.0260 0.1200)
HSV
hsv(275, 81%, 13%)
LAB
lab(3.56% 10.67 -13.23)
LCH
lch(3.56% 17.00 308.90)
CMYK
cmyk(34%, 81%, 0%, 87%)

Etymology

Sensibly
adjective

Latin sēnsibilis, perceivable / having-good-sense — adverbial-and-adjectival suffix -ly. As a color modifier, sensibly implies a neutral-and-practical-and-rational quality where the hue carries the visual register of practical-and-functional color-decision matched to its everyday-use context. Sits at the neutral-and-traditional end of the grid, parallel to reasonably and practical in usage.

Manganite
noun

γ-MnO(OH) manganese hydroxide-oxide mineral — a deep-black orthorhombic mineral mined principally at Ilfeld in Germany and Negaunee in Michigan. Manganite color refers to a freshly cleaved Ilfeld manganite prismatic-cluster face: a saturated, slightly cool deep black with the metallic finish of orthorhombic manganese-hydroxide-oxide. One of the principal ores of manganese metal, also a steel-alloy and dry-cell-battery component.

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.

#150620
Original
#000c21
Protanopia
#030d1f
Deuteranopia
#130b11
Tritanopia
#0b0b0b
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
19.47:1
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
1.08:1

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
##150620
Display P3
Display P3
color(display-p3 0.0743 0.0260 0.1200)
Inside sRGBOKLCH chroma 0.055

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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