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Aligned Indicolite

#1da39f
Notes

Aligned Indicolite (#1DA39F) is a true cyan 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 (178°, 70%, 38%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1da39f
RGB
rgb(29, 163, 159)
HSL
hsl(178, 70%, 38%)
HWB
hwb(178 11% 36%)
OKLCH
oklch(64.9% 0.106 191.6)
P3
color(display-p3 0.3038 0.6298 0.6200)
HSV
hsv(178, 82%, 64%)
LAB
lab(60.74% -34.09 -7.67)
LCH
lch(60.74% 34.95 192.68)
CMYK
cmyk(82%, 0%, 2%, 36%)

Etymology

Aligned
adjective

French à-ligne, to-line-up — past-participle of align. As a color modifier, aligned implies a clear-and-axis-coordinated quality where the hue carries the visual register of carefully-parallel-arranged elements. Sits at the crisp-and-balanced end of the grid, parallel to symmetrical and squared in usage.

Indicolite
noun

A blue variety of tourmaline — colored by trace iron, mined principally in Brazil, Mozambique, and Pakistan. The color refers to a faceted Brazilian indicolite: a saturated, slightly cool deep blue-green with the gem's signature internal warmth. Cooler than aquamarine.

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.

#1da39f
Original
#999a9f
Protanopia
#878da0
Deuteranopia
#00a8a1
Tritanopia
#868686
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
3.09:1
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
6.79:1

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
##1DA39F
Display P3
Display P3
color(display-p3 0.3038 0.6298 0.6200)
P3 has subtle headroomOKLCH chroma 0.106

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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