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Symmetrical End Verdigris

#40a8a0
Notes

Symmetrical End Verdigris (#40A8A0) is a true cyan 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 (175°, 45%, 45%) 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
#40a8a0
RGB
rgb(64, 168, 160)
HSL
hsl(175, 45%, 45%)
HWB
hwb(175 25% 34%)
OKLCH
oklch(67.0% 0.096 188.0)
P3
color(display-p3 0.3682 0.6502 0.6256)
HSV
hsv(175, 62%, 66%)
LAB
lab(63.04% -31.56 -4.75)
LCH
lch(63.04% 31.91 188.57)
CMYK
cmyk(62%, 0%, 5%, 34%)

Etymology

Symmetrical
adjective

Greek symmetría, due-proportion — adjectival suffix -al, derived from sym-metron (with-measure). As a color modifier, symmetrical implies a clear-and-balanced-and-mirrored quality where the hue carries the visual register of bilateral-or-radial proportional symmetry. Sits at the crisp-and-balanced end of the grid, parallel to balanced and aligned in usage.

End
modifier

Old English ende, end / finish. As a color modifier, end implies a final-and-conclusion quality, the visual register of day's-end-and-year's-end final-and-conclusion close-of-period-and-end-of-day twilight-and-final-light surfaces under twilight close-of-period light. Sits at the modifier-and-time end of the grid, parallel to fall and eve in usage.

Verdigris
noun

The basic copper carbonate that forms on weathered copper and bronze — the pigment scraped from oxidized metal and used in Renaissance painting before being supplanted by more stable greens. The color refers to a thick verdigris on aged copper roofing or the Statue of Liberty's surface: a soft, slightly muted blue-green with the powdery finish of mineral oxide. Cooler than patina, warmer than seafoam, with the archaeological weight of a mineral made by time.

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.

#40a8a0
Original
#9f9fa0
Protanopia
#8f94a1
Deuteranopia
#00aca5
Tritanopia
#919191
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).
Failon White
2.87:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
7.33:1

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
##40A8A0
Display P3
Display P3
color(display-p3 0.3682 0.6502 0.6256)
P3 has subtle headroomOKLCH chroma 0.096

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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