colors
Back to gallery

Calm Stachys

#018771
Notes

Calm Stachys (#018771) 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 (170°, 99%, 27%) places it in the highly saturated band at a dark lightness. Best used in small doses, like logos, CTAs, focus rings, or highlight text, where its saturation becomes a feature rather than noise. 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
#018771
RGB
rgb(1, 135, 113)
HSL
hsl(170, 99%, 27%)
HWB
hwb(170 0% 47%)
OKLCH
oklch(55.7% 0.104 175.8)
P3
color(display-p3 0.2301 0.5213 0.4466)
HSV
hsv(170, 99%, 53%)
LAB
lab(50.13% -36.62 3.08)
LCH
lch(50.13% 36.75 175.20)
CMYK
cmyk(99%, 0%, 16%, 47%)

Etymology

Calm
adjective

Latin calma, heat of the day — paradoxically drifted in Italian to mean stillness. Used as a color modifier since the seventeenth century for hues that read as untroubled. Calm blue, calm gray: moderate saturation combined with optical quiet. Sits at the crisp-bucket near quiet and steady.

Stachys
noun

The genus Stachys — particularly S. byzantina (lamb's ear), the cottage-garden perennial with thick silver-velvet woolly foliage. The color refers to a fresh S. byzantina leaf: a soft, slightly cool pale silver-green with the dense velvet matte finish of trichome-covered leaf 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.

#018771
Original
#817e70
Protanopia
#737373
Deuteranopia
#008981
Tritanopia
#696969
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
4.46:1
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
4.71:1

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
##018771
Display P3
Display P3
color(display-p3 0.2301 0.5213 0.4466)
P3 has subtle headroomOKLCH chroma 0.104

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.

Related Colors

Canvas