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Substantial Capricorn Forest

#18841d
Notes

Substantial Capricorn Forest (#18841D) 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 (123°, 69%, 31%) 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
#18841d
RGB
rgb(24, 132, 29)
HSL
hsl(123, 69%, 31%)
HWB
hwb(123 9% 48%)
OKLCH
oklch(53.6% 0.166 143.3)
HSV
hsv(123, 82%, 52%)
LAB
lab(47.99% -49.19 44.20)
LCH
lch(47.99% 66.13 138.06)
CMYK
cmyk(82%, 0%, 78%, 48%)

Etymology

Substantial
adjective

Latin substantia, substance — adjectival suffix -al, derived from sub-stāre (to stand under). As a color modifier, substantial implies a saturated-and-weighty-and-material quality where the hue carries visual mass and presence. Sits at the bold-and-weighty end of the grid, parallel to weighty and hefty in usage.

Capricorn
modifier

Latin capricornus, horned-goat-of-the-zodiac. As a color modifier, capricorn implies a sea-goat-and-earth-sign-and-Saturn-ruled-cardinal-earth quality, the visual register of Hellenic-Capricorn-and-Pan-sea-goat hand-sea-goat-and-earth-sign-and-Saturn-ruled-cardinal-earth Hellenic-Capricorn-and-Pan-sea-goat-and-Babylonian-Suhurmašu capricorn-and-sea-goat-and-earth-sign surfaces under Hellenic-Capricorn-and-Pan-sea-goat-and-Babylonian-Suhurmašu winter-solstice-and-December-and-January cardinal-earth-sign-light. Sits at the modifier-and-zodiac end of the grid, parallel to sagittarius and aquarius 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

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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.

#18841d
Original
#877706
Protanopia
#7b6f29
Deuteranopia
#008070
Tritanopia
#666666
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
4.82:1
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
4.36:1

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