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True Shadow

#120a37
Notes

True Shadow (#120A37) 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 (251°, 69%, 13%) 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 yellow. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#120a37
RGB
rgb(18, 10, 55)
HSL
hsl(251, 69%, 13%)
HWB
hwb(251 4% 78%)
OKLCH
oklch(19.2% 0.083 283.6)
HSV
hsv(251, 82%, 22%)
LAB
lab(5.61% 18.10 -27.39)
LCH
lch(5.61% 32.83 303.46)
CMYK
cmyk(67%, 82%, 0%, 78%)

Etymology

True
adjective

Old English trēowe, faithful — used as a color modifier since the seventeenth century for hues that read as the canonical version of their family. True red, true blue: the saturation is full, the hue is neither shifted nor adulterated. Sits at the center of the bold and crisp buckets, marking the unequivocal middle of any chromatic family.

Shadow
noun

The dark region where an opaque object blocks direct light from a source — the projected absence rather than a positive color. Shadow as a color refers to the deep gray of a shadow on a sunlit white surface: a soft, slightly cool gray with the optical complexity of indirect ambient light. Cooler than pewter, warmer than slate, with the painterly weight of a value that defines form more than any pigment does.

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.

#120a37
Original
#001438
Protanopia
#001136
Deuteranopia
#02161f
Tritanopia
#0f0f0f
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
18.68:1
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
1.12:1

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