#3FDF9F
Closest named color: Aqua Green (#12E193). oklch(80.7% 0.16 161.7), rgb(63, 223, 159).
Aa
Black text reads best on this color (12.26:1).
About this color
#3FDF9F is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.160 and its hue 162°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.023 away. Black text reads best on it, at 12.26:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 12.26:1 |
| White text | 1.71:1 |
Values
| HEX | #3FDF9F |
| RGB | rgb(63, 223, 159) |
| HSL | hsl(156, 71%, 56%) |
| OKLCH | oklch(80.7% 0.16 161.7) |
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 #3FDF9F | 1.71:1 | Fails | Lc -34.1 | Non-text elements, placeholder text |
| Black text on #3FDF9F | 12.26:1 | AAA | Lc 73.5 | Content text, not long reading |
| #3FDF9F text on white | 1.71:1 | Fails | Lc 30.3 | Non-text elements, placeholder text |
| #3FDF9F text on black | 12.26:1 | AAA | Lc -72.5 | Content text, not long reading |
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
#EAFAF1
oklch(97.1% 0.021 161.5)
-
Step 100
100
#D0F4E0
oklch(93.6% 0.046 161.1)
-
Step 200
200
#A3ECC7
oklch(88.5% 0.089 161.8)
-
Step 300
300 (this color)
#3FDF9F
oklch(80.7% 0.16 161.7)
-
Step 400
400
#00BE81
oklch(70.8% 0.157 161.4)
-
Step 500
500
#00A36E
oklch(63.2% 0.14 161.4)
-
Step 600
600
#00895C
oklch(55.7% 0.123 161.5)
-
Step 700
700
#00734D
oklch(49.1% 0.108 161.8)
-
Step 800
800
#005E3E
oklch(42.6% 0.094 161.6)
-
Step 900
900
#004F33
oklch(37.8% 0.084 161.3)
-
Step 950
950
#002F1D
oklch(27% 0.059 161.7)
#3FDF9F 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) | #DCCE9B | 0.154 |
| Deuteranopia (no green cones) | #C7C0A3 | 0.148 |
| Tritanopia (no blue cones) | #00DECE | 0.065 |
| Achromatopsia (no color) | #C6C6C6 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FDF9F
#3FDF9F
oklch(80.7% 0.16 161.7)
- #FF98DB
#FF98DB
oklch(80.6% 0.147 341.5)
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 #3FDF9F, closest first.
No curated palette has a color within ΔE 0.04 of #3FDF9F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.023
- Emerald #06D6A0 ΔE 0.032
- Aqua Marine #2EE8BB ΔE 0.037
- Weird Green #3AE57F ΔE 0.048
- Seaweed #18D17B ΔE 0.057
- Medium Aquamarine #66CDAA ΔE 0.061
- Turquoise #40E0D0 ΔE 0.067
- Seafoam Blue #78D1B6 ΔE 0.069
Use #3FDF9F 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.