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Alight Roller

#40ca71
Notes

Alight Roller (#40CA71) is a true green with a cool character. It leans cool, sitting on the blue, green, and violet side of the wheel. Quiet and dependable, a fit for product UI and data visualization. Its HSL profile (141°, 57%, 52%) 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 magenta. For something softer, pull in its analogous neighbors on either side of the wheel.

HEX
#40ca71
RGB
rgb(64, 202, 113)
HSL
hsl(141, 57%, 52%)
HWB
hwb(141 25% 21%)
OKLCH
oklch(74.4% 0.173 151.2)
P3
color(display-p3 0.4196 0.7814 0.4777)
HSV
hsv(141, 68%, 79%)
LAB
lab(72.57% -56.33 33.90)
LCH
lch(72.57% 65.74 148.96)
CMYK
cmyk(68%, 0%, 44%, 21%)

Etymology

Alight
adjective

Old English ā-lihtan, to set alight — past-participle of alight. As a color modifier, alight implies a saturated-and-currently-illuminated quality, the bright color of Christmas-tree and Diwali-lamp festival-decoration illuminated-and-twinkling emission. Sits at the bright-and-warm end of the grid, parallel to aflame and aglow in usage.

Roller
noun

The family Coraciidae — Old World rollers whose acrobatic flight gives the family its name. Coracias caudatus (lilac-breasted roller) of southern Africa displays saturated turquoise wing covers. The color refers to a male lilac-breasted roller's wing: a saturated, slightly cool deep turquoise.

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.

#40ca71
Original
#cbb96a
Protanopia
#baad77
Deuteranopia
#00c7b4
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
2.12:1
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
9.90:1

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
##40CA71
Display P3
Display P3
color(display-p3 0.4196 0.7814 0.4777)
P3 has subtle headroomOKLCH chroma 0.173

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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