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Dim Indaco

#283d72
Notes

Dim Indaco (#283D72) is a deep azure with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (223°, 48%, 30%) 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 amber. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#283d72
RGB
rgb(40, 61, 114)
HSL
hsl(223, 48%, 30%)
HWB
hwb(223 16% 55%)
OKLCH
oklch(37.2% 0.095 265.7)
P3
color(display-p3 0.1746 0.2370 0.4327)
HSV
hsv(223, 65%, 45%)
LAB
lab(26.74% 10.09 -33.12)
LCH
lch(26.74% 34.62 286.94)
CMYK
cmyk(65%, 46%, 0%, 55%)

Etymology

Dim
adjective

Old English dim, dark, obscured. As a color modifier, dim implies reduced luminance without specific saturation effect — a dim red is a less luminous version of red rather than a less saturated one. Sits at the value-only end of the deep grid, closer to dark than to plush.

Indaco
noun

The Italian word for indigo — borrowed via Greek indikon (Indian thing). Indaco in Italian art vocabulary refers specifically to the deep-blue plant-dye pigment used in Italian Renaissance painting for the Marian mantles and aristocratic dress. The color refers to indaco pigment in tempera: a saturated, slightly cool deep blue. The Italian cousin of indigo.

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.

#283d72
Original
#244374
Protanopia
#193c71
Deuteranopia
#004952
Tritanopia
#3c3c3c
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
10.50:1
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
2.00:1

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
##283D72
Display P3
Display P3
color(display-p3 0.1746 0.2370 0.4327)
P3 has subtle headroomOKLCH chroma 0.095

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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