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Spectral Conifer

#40ab09
Notes

Spectral Conifer (#40AB09) is a true 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 (100°, 90%, 35%) places it in the highly saturated band at a mid 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 violet. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#40ab09
RGB
rgb(64, 171, 9)
HSL
hsl(100, 90%, 35%)
HWB
hwb(100 4% 33%)
OKLCH
oklch(65.3% 0.203 138.9)
P3
color(display-p3 0.3726 0.6617 0.1992)
HSV
hsv(100, 95%, 67%)
LAB
lab(61.86% -55.39 61.61)
LCH
lch(61.86% 82.85 131.96)
CMYK
cmyk(63%, 0%, 95%, 33%)

Etymology

Spectral
adjective

Latin spectrum, appearance — adjectival suffix -al. As a color modifier, spectral implies a saturated-and-rainbow-decomposed-and-pure quality, the bright color of Newton-prism sunlight-decomposed seven-color spectrum band. Sits at the bright-and-pure end of the grid, parallel to prismatic and pure in usage.

Conifer
noun

Coniferales, the cone-bearing trees that dominate boreal and high-altitude forests across both hemispheres. The color refers to the average reflectance of a mid-summer conifer canopy: a deep, slightly muted green with the matte finish of resinous needle foliage. Darker than meadow, cooler than basil, with the structural weight of a forest type that traps more carbon per hectare than almost any other.

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.

#40ab09
Original
#b09b00
Protanopia
#a39226
Deuteranopia
#33a591
Tritanopia
#898989
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).
Failon White
2.98:1
The quick brown foxSample body text at normal size. The wcag minimum for body contrast is 4.5:1 (AA) or 7:1 (AAA).
AAAon Black
7.05:1

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
##40AB09
Display P3
Display P3
color(display-p3 0.3726 0.6617 0.1992)
P3 has visible headroomOKLCH chroma 0.203

This color is chromatic enough that authoring it as P3 native (instead of clamping to sRGB) gives a perceptibly more saturated render on wide-gamut displays — modern Macs, iPhones, iPads, and most recent OLED laptops.

Related Colors

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