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Serene Naiad

#136840
Notes

Serene Naiad (#136840) 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 (152°, 69%, 24%) 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
#136840
RGB
rgb(19, 104, 64)
HSL
hsl(152, 69%, 24%)
HWB
hwb(152 7% 59%)
OKLCH
oklch(45.9% 0.101 157.0)
P3
color(display-p3 0.1895 0.4017 0.2644)
HSV
hsv(152, 82%, 41%)
LAB
lab(38.57% -34.53 15.77)
LCH
lch(38.57% 37.97 155.45)
CMYK
cmyk(82%, 0%, 38%, 59%)

Etymology

Serene
adjective

Latin serēnus, clear / unclouded. As a color modifier, serene implies a clear-and-untroubled quality where the hue carries the visual register of cloudless-bright-day atmospheric stability. Sits at the crisp-and-calm end of the grid, parallel to placid and untroubled in usage.

Naiad
noun

The water-nymphs of Greek mythology — daughters of river-gods who personified the springs, brooks, and lakes of the ancient Mediterranean. Naiad color refers to a Greek mountain spring at midday: a soft, slightly cool deep blue-green with the optical clarity of mineral-spring water emerging into a marble basin.

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.

#136840
Original
#675f3d
Protanopia
#5d5843
Deuteranopia
#00675e
Tritanopia
#535353
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
6.81:1
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
3.08:1

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
##136840
Display P3
Display P3
color(display-p3 0.1895 0.4017 0.2644)
P3 has subtle headroomOKLCH chroma 0.101

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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