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Senatorial Akkad Forest

#1b7e1c
Notes

Senatorial Akkad Forest (#1B7E1C) is a deep green 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 (121°, 65%, 30%) 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#1b7e1c
RGB
rgb(27, 126, 28)
HSL
hsl(121, 65%, 30%)
HWB
hwb(121 11% 51%)
OKLCH
oklch(51.9% 0.159 143.0)
P3
color(display-p3 0.2376 0.4869 0.1751)
HSV
hsv(121, 79%, 49%)
LAB
lab(45.96% -46.83 42.56)
LCH
lch(45.96% 63.28 137.73)
CMYK
cmyk(79%, 0%, 78%, 51%)

Etymology

Senatorial
adjective

Latin senātōrius, of the senator — adjectival suffix. As a color modifier, senatorial implies a saturated-and-aristocratic-and-Roman-Republic quality, the deep-rich color of Roman-Senate toga praetexta purple-bordered ceremonial-citizen-class livery. Sits at the bold-and-aristocratic end of the grid, parallel to patrician and imperial.

Akkad
modifier

Akkadian Akkadu, Akkad. As a color modifier, akkad implies a Sargon-and-Mesopotamian-Empire quality, the visual register of Akkadian-Empire-of-Sargon hand-built ziggurat-and-cuneiform-tablet bronze-age Mesopotamian-Imperial surfaces under Sargon-of-Akkad Mesopotamian Imperial-cuneiform sun-baked light. Sits at the modifier-and-cultural end of the grid, parallel to sumer and median in usage.

Forest
noun

The dense canopy of a temperate or tropical woodland — oak, beech, pine, eucalyptus, mahogany — wherever leaves close above to filter the light below. Forest green refers to the average reflectance of a healthy mid-summer canopy seen from below: a saturated, slightly muted green with the matte finish of layered chlorophyll. Deeper than fern, cooler than olive, with the ecological weight of a word that has named every wooded biome on Earth.

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.

#1b7e1c
Original
#817107
Protanopia
#766a27
Deuteranopia
#007a6b
Tritanopia
#626262
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
5.19:1
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
4.05:1

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
##1B7E1C
Display P3
Display P3
color(display-p3 0.2376 0.4869 0.1751)
P3 has subtle headroomOKLCH chroma 0.159

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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