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Stimulating Conure

#42bf51
Notes

Stimulating Conure (#42BF51) is a true green with an earthy character. It leans grounded and natural, the kind of color that plays well with wood, clay, linen, and warm neutrals. Its HSL profile (127°, 49%, 50%) places it in the balanced band at a mid lightness. It works across type, buttons, and borders, saturated enough to feel deliberate but balanced enough to not fight the rest of the palette. 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
#42bf51
RGB
rgb(66, 191, 81)
HSL
hsl(127, 49%, 50%)
HWB
hwb(127 26% 25%)
OKLCH
oklch(71.2% 0.187 145.2)
P3
color(display-p3 0.4063 0.7390 0.3712)
HSV
hsv(127, 65%, 75%)
LAB
lab(68.76% -56.68 44.87)
LCH
lch(68.76% 72.29 141.63)
CMYK
cmyk(65%, 0%, 58%, 25%)

Etymology

Stimulating
adjective

Latin stimulāns, spurring on — present-participle of stimulate, derived from stimulus (a goad). As a color modifier, stimulating implies a saturated-and-arousing-and-attentive quality where the hue increases visual-and-cognitive engagement. Sits at the bright-and-active end of the grid, parallel to invigorating and bracing in usage.

Conure
noun

The genus Pyrrhura and related green parrots of the South American mainland — popular pet birds with predominantly green plumage. Conure color refers to the green back of a green-cheeked conure (P. molinae): a saturated, slightly cool deep green with the matte finish of carotenoid-and-structural feather color.

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.

#42bf51
Original
#c2ae46
Protanopia
#b3a45a
Deuteranopia
#1fbaa7
Tritanopia
#9c9c9c
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
2.39:1
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
8.80:1

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
##42BF51
Display P3
Display P3
color(display-p3 0.4063 0.7390 0.3712)
P3 has visible headroomOKLCH chroma 0.187

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.

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