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Neat Aqua

#15625d
Notes

Neat Aqua (#15625D) is a deep 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 (176°, 65%, 23%) 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 red. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#15625d
RGB
rgb(21, 98, 93)
HSL
hsl(176, 65%, 23%)
HWB
hwb(176 8% 62%)
OKLCH
oklch(45.1% 0.071 188.4)
P3
color(display-p3 0.1823 0.3786 0.3634)
HSV
hsv(176, 79%, 38%)
LAB
lab(37.27% -23.56 -3.70)
LCH
lch(37.27% 23.85 188.93)
CMYK
cmyk(79%, 0%, 5%, 62%)

Etymology

Neat
adjective

Old French net, clean / pure — sharing root with Latin nitidus. As a color modifier, neat implies a clear-and-orderly quality where the hue carries the well-arranged visual register without clutter or excess. Sits at the crisp-and-orderly end of the grid, parallel to trim and tidy in usage.

Aqua
noun

Latin for water, borrowed into English as a color name in the early twentieth century — initially for the pale blue-green of swimming pools and tropical seas. The color refers to a clear-bottomed swimming pool in midday sun: a clean, slightly green-shifted light blue with the optical clarity of filtered water. Cooler than seafoam, lighter than turquoise, with the mid-century weight of a word that paints itself across postwar interior decor.

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.

#15625d
Original
#5c5c5d
Protanopia
#51545e
Deuteranopia
#006560
Tritanopia
#515151
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
7.15:1
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
2.94:1

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
##15625D
Display P3
Display P3
color(display-p3 0.1823 0.3786 0.3634)
Inside sRGBOKLCH chroma 0.071

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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