#A3DD99
Closest named color: Hospital Green (#9BE5AA). oklch(84.1% 0.11 140.9), rgb(163, 221, 153).
Aa
Black text reads best on this color (13.35:1).
About this color
#A3DD99 is a light, moderately saturated green. In OKLCH its lightness is 84%, its chroma 0.110 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Hospital Green (#9BE5AA), ΔE 0.024 away. Black text reads best on it, at 13.35:1.
| Hue family | Greens |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Hospital Green (#9BE5AA) |
| Black text | 13.35:1 |
| White text | 1.57:1 |
Values
| HEX | #A3DD99 |
| RGB | rgb(163, 221, 153) |
| HSL | hsl(111, 50%, 73%) |
| OKLCH | oklch(84.1% 0.11 140.9) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #A3DD99 | 1.57:1 | Fails | Lc -29.4 | Dividers and decoration only |
| Black text on #A3DD99 | 13.35:1 | AAA | Lc 77.8 | Fine for body text |
| #A3DD99 text on white | 1.57:1 | Fails | Lc 26.0 | Dividers and decoration only |
| #A3DD99 text on black | 13.35:1 | AAA | Lc -77.0 | Fine for body text |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 300.
-
Step 50
50
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DFF0DC
oklch(93.7% 0.032 141)
-
Step 200
200
#C4E4BE
oklch(88.6% 0.061 140.7)
-
Step 300
300 (this color)
#A3DD99
oklch(84.1% 0.11 140.9)
-
Step 400
400
#5ABA4A
oklch(70.6% 0.176 140.9)
-
Step 500
500
#27A500
oklch(63% 0.207 140.9)
-
Step 600
600
#208B00
oklch(55.6% 0.182 140.8)
-
Step 700
700
#197500
oklch(49.1% 0.161 140.9)
-
Step 800
800
#136000
oklch(42.7% 0.14 140.8)
-
Step 900
900
#0E5000
oklch(37.6% 0.123 140.9)
-
Step 950
950
#053000
oklch(27% 0.089 141)
#A3DD99 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #E1D295 | 0.081 |
| Deuteranopia (no green cones) | #D8CC9D | 0.080 |
| Tritanopia (no blue cones) | #9FD9CB | 0.071 |
| Achromatopsia (no color) | #CECECE | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3DD99
#A3DD99
oklch(84.1% 0.11 140.9)
- #ECB3F7
#ECB3F7
oklch(84.1% 0.111 320.9)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #A3DD99, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Hospital Green #9BE5AA ΔE 0.024
- Light Grey Green #B7E1A1 ΔE 0.029
- Pale Olive Green #B1D27B ΔE 0.038
- Pale Olive #B9CC81 ΔE 0.048
- Light Teal #90E4C1 ΔE 0.049
- Greenish Tan #BCCB7A ΔE 0.053
- Greenish Beige #C9D179 ΔE 0.054
- Light Green #90EE90 ΔE 0.054
Use #A3DD99 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.