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Stimulating Forgetmenot

#40bbfd
Notes

Stimulating Forgetmenot (#40BBFD) is a true azure with a neon character. It sits at the high-saturation edge of its family. Use it sparingly, as signage, accent, or highlight against darker surfaces. Its HSL profile (201°, 98%, 62%) 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 orange. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#40bbfd
RGB
rgb(64, 187, 253)
HSL
hsl(201, 98%, 62%)
HWB
hwb(201 25% 1%)
OKLCH
oklch(75.3% 0.142 237.0)
P3
color(display-p3 0.3964 0.7235 0.9691)
HSV
hsv(201, 75%, 99%)
LAB
lab(72.04% -12.41 -42.20)
LCH
lch(72.04% 43.99 253.61)
CMYK
cmyk(75%, 26%, 0%, 1%)

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.

Forgetmenot
noun

Myosotis sylvatica, the European forget-me-not — a small woodland-and-streamside wildflower whose pale blue five-petaled flowers symbolize remembrance and faithful love in European folk tradition. The color refers to a fresh forget-me-not flower: a soft, slightly cool pale blue with the matte finish of small five-petaled flower with yellow center.

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.

#40bbfd
Original
#9bbbff
Protanopia
#82a9fc
Deuteranopia
#00ccd2
Tritanopia
#a6a6a6
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
2.16:1
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
9.74:1

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
##40BBFD
Display P3
Display P3
color(display-p3 0.3964 0.7235 0.9691)
P3 has subtle headroomOKLCH chroma 0.142

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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