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Pleasant Cygnus Verdigris

#21753b
Notes

Pleasant Cygnus Verdigris (#21753B) is a deep green with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (139°, 56%, 29%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#21753b
RGB
rgb(33, 117, 59)
HSL
hsl(139, 56%, 29%)
HWB
hwb(139 13% 54%)
OKLCH
oklch(49.8% 0.120 149.7)
P3
color(display-p3 0.2323 0.4523 0.2551)
HSV
hsv(139, 72%, 46%)
LAB
lab(43.30% -38.54 24.87)
LCH
lch(43.30% 45.87 147.17)
CMYK
cmyk(72%, 0%, 50%, 54%)

Etymology

Pleasant
adjective

From the French plaisant, pleasing — used as a color modifier since the fifteenth century for hues that read as agreeable, the kind of color that wears well over a long viewing without becoming demanding or fatiguing. Pleasant green, pleasant rose: moderate saturation combined with optical comfort. Sits at the crisp-bucket alongside easy and calm.

Cygnus
modifier

Latin cygnus, swan. As a color modifier, cygnus implies a swan-flying-and-Northern-Cross quality, the visual register of Cygnus-Swan-and-Northern-Cross hand-swan-flying-and-Northern-Cross Cygnus-Swan-and-Northern-Cross-and-Bortle-1-sky cygnus-and-swan-flying-and-Northern-Cross surfaces under Cygnus-Swan-and-Northern-Cross-and-Bortle-1-sky August-and-September-late-summer-zenith Milky-Way-stellar-light. Sits at the modifier-and-cosmic end of the grid, parallel to deneb and lyra 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.

#21753b
Original
#766b36
Protanopia
#6c633f
Deuteranopia
#007367
Tritanopia
#5f5f5f
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).
AAon White
5.72:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AA Largeon Black
3.67:1

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
##21753B
Display P3
Display P3
color(display-p3 0.2323 0.4523 0.2551)
P3 has subtle headroomOKLCH chroma 0.120

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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