#3FB866
Closest named color: Cool Green (#33B864). oklch(69.6% 0.16 150.5), rgb(63, 184, 102).
Aa
Black text reads best on this color (8.25:1).
About this color
#3FB866 is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.160 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Cool Green (#33B864), ΔE 0.007 away. Black text reads best on it, at 8.25:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Cool Green (#33B864) |
| Black text | 8.25:1 |
| White text | 2.54:1 |
Values
| HEX | #3FB866 |
| RGB | rgb(63, 184, 102) |
| HSL | hsl(139, 49%, 48%) |
| OKLCH | oklch(69.6% 0.16 150.5) |
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 #3FB866 | 2.54:1 | Fails | Lc -54.5 | Large or bold text, headings |
| Black text on #3FB866 | 8.25:1 | AAA | Lc 54.6 | Large or bold text, headings |
| #3FB866 text on white | 2.54:1 | Fails | Lc 49.4 | Large or bold text, headings |
| #3FB866 text on black | 8.25:1 | AAA | Lc -52.5 | Large or bold text, headings |
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 400.
-
Step 50
50
#EFF8F1
oklch(97% 0.013 152.6)
-
Step 100
100
#DDF0E0
oklch(93.7% 0.029 150.1)
-
Step 200
200
#C0E4C6
oklch(88.5% 0.056 149.9)
-
Step 300
300
#90D39F
oklch(80.8% 0.1 150.7)
-
Step 400
400 (this color)
#3FB866
oklch(69.6% 0.16 150.5)
-
Step 500
500
#00A54E
oklch(63.1% 0.171 150.6)
-
Step 600
600
#008B40
oklch(55.7% 0.152 150.4)
-
Step 700
700
#007535
oklch(49.2% 0.134 150.5)
-
Step 800
800
#00602A
oklch(42.8% 0.117 150.4)
-
Step 900
900
#005022
oklch(37.7% 0.103 150.5)
-
Step 950
950
#003012
oklch(27% 0.073 150.7)
#3FB866 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) | #B9A960 | 0.133 |
| Deuteranopia (no green cones) | #AA9E6C | 0.132 |
| Tritanopia (no blue cones) | #06B5A4 | 0.087 |
| Achromatopsia (no color) | #A2A2A2 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FB866
#3FB866
oklch(69.6% 0.16 150.5)
- #D475CB
#D475CB
oklch(69.7% 0.159 330.7)
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 #3FB866, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Cool Green #33B864 ΔE 0.007
- Medium Sea Green #3CB371 ΔE 0.023
- Dark Mint Green #20C073 ΔE 0.023
- Dark Mint #48C072 ΔE 0.026
- Boring Green #63B365 ΔE 0.028
- Dark Pastel Green #56AE57 ΔE 0.029
- Green Teal #0CB577 ΔE 0.029
- Algae Green #21C36F ΔE 0.030
Use #3FB866 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.