#A3F9BB
Closest named color: Light Seafoam (#A0FEBF). oklch(91.1% 0.119 152.3), rgb(163, 249, 187).
Aa
Black text reads best on this color (16.82:1).
About this color
#A3F9BB is a very light, moderately saturated green. In OKLCH its lightness is 91%, its chroma 0.119 and its hue 152°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Seafoam (#A0FEBF), ΔE 0.013 away. Black text reads best on it, at 16.82:1.
| Hue family | Greens |
| Lightness | very light (91%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Light Seafoam (#A0FEBF) |
| Black text | 16.82:1 |
| White text | 1.24:1 |
Values
| HEX | #A3F9BB |
| RGB | rgb(163, 249, 187) |
| HSL | hsl(137, 88%, 81%) |
| OKLCH | oklch(91.1% 0.119 152.3) |
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 #A3F9BB | 1.24:1 | Fails | Lc -14.1 | Not readable |
| Black text on #A3F9BB | 16.82:1 | AAA | Lc 91.4 | Preferred for body text |
| #A3F9BB text on white | 1.24:1 | Fails | Lc 12.2 | Not readable |
| #A3F9BB text on black | 16.82:1 | AAA | Lc -91.8 | Preferred 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 100.
-
Step 50
50
#ECFAEF
oklch(97.2% 0.021 152.2)
-
Step 100
100 (this color)
#A3F9BB
oklch(91.1% 0.119 152.3)
-
Step 200
200
#AFEABE
oklch(88.5% 0.085 152.2)
-
Step 300
300
#68DD8F
oklch(81% 0.154 152.4)
-
Step 400
400
#00C064
oklch(70.8% 0.185 152.3)
-
Step 500
500
#00A455
oklch(63% 0.164 152.5)
-
Step 600
600
#008A46
oklch(55.5% 0.145 152.3)
-
Step 700
700
#00743A
oklch(49% 0.128 152.4)
-
Step 800
800
#00602F
oklch(42.8% 0.112 152.4)
-
Step 900
900
#005026
oklch(37.8% 0.099 152.3)
-
Step 950
950
#003014
oklch(27.1% 0.071 152.1)
#A3F9BB 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) | #F9ECB7 | 0.104 |
| Deuteranopia (no green cones) | #ECE2BE | 0.102 |
| Tritanopia (no blue cones) | #94F7E8 | 0.062 |
| Achromatopsia (no color) | #E6E6E6 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #A3F9BB
#A3F9BB
oklch(91.1% 0.119 152.3)
- #FFD1F7
#FFD1F7
oklch(91.1% 0.071 332.1)
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 #A3F9BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Seafoam #A0FEBF ΔE 0.013
- Light Mint Green #A6FBB2 ΔE 0.014
- Light Seafoam Green #A7FFB5 ΔE 0.021
- Mint #9FFEB0 ΔE 0.023
- Light Mint #B6FFBB ΔE 0.027
- Light Pastel Green #B2FBA5 ΔE 0.031
- Washed Out Green #BCF5A6 ΔE 0.031
- Celadon #BEFDB7 ΔE 0.032
Use #A3F9BB 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.