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Functional Knot Moss

#145f4e
Notes

Functional Knot Moss (#145F4E) is a deep teal 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 (166°, 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
#145f4e
RGB
rgb(20, 95, 78)
HSL
hsl(166, 65%, 23%)
HWB
hwb(166 8% 63%)
OKLCH
oklch(43.7% 0.076 173.6)
P3
color(display-p3 0.1758 0.3669 0.3090)
HSV
hsv(166, 79%, 37%)
LAB
lab(35.76% -26.75 3.37)
LCH
lch(35.76% 26.96 172.83)
CMYK
cmyk(79%, 0%, 18%, 63%)

Etymology

Functional
adjective

Latin fūnctiō, performance — adjectival suffix -al. As a color modifier, functional implies a clear-and-purpose-fit-and-utilitarian quality, the crisp color of Mid-Century-Modern and Bauhaus form-follows-function design-aesthetic. Sits at the crisp-and-functional end of the grid, parallel to practical and utilitarian in usage.

Knot
modifier

Old English cnotta, knot. As a color modifier, knot implies a sailor's-rope-knot quality, the visual register of Royal-Navy-and-merchant-marine-knot hand-tied sailor's-rope-and-line bowline-and-figure-eight-and-clove-hitch maritime-rigging surfaces under tall-ship-and-frigate sailor's-knot-and-line working light. Sits at the modifier-and-nautical end of the grid, parallel to sheet and spar in usage.

Moss
noun

Bryophyta — the nonvascular plants that colonized land 470 million years ago, before vascular plants and far before flowers. The color refers to a thick mat of Hypnum or sphagnum on a temperate forest floor: a soft, slightly yellow-shifted green with the velvet texture of millimeter-scale leaves. Dustier than fern, deeper than lichen, with the slow patience of a plant that lives by absorbing rain through its surface.

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.

#145f4e
Original
#5c584d
Protanopia
#52514f
Deuteranopia
#00605a
Tritanopia
#4e4e4e
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
7.56:1
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
2.78:1

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
##145F4E
Display P3
Display P3
color(display-p3 0.1758 0.3669 0.3090)
Inside sRGBOKLCH chroma 0.076

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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