#3FCF80
Closest named color: Seaweed (#18D17B). oklch(76% 0.166 154.7), rgb(63, 207, 128).
Aa
Black text reads best on this color (10.44:1).
About this color
#3FCF80 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.166 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.016 away. Black text reads best on it, at 10.44:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.166) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.44:1 |
| White text | 2.00:1 |
Values
| HEX | #3FCF80 |
| RGB | rgb(63, 207, 128) |
| HSL | hsl(147, 60%, 53%) |
| OKLCH | oklch(76% 0.166 154.7) |
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 #3FCF80 | 2.00:1 | Fails | Lc -43.0 | Non-text elements, placeholder text |
| Black text on #3FCF80 | 10.44:1 | AAA | Lc 65.4 | Content text, not long reading |
| #3FCF80 text on white | 2.00:1 | Fails | Lc 38.5 | Non-text elements, placeholder text |
| #3FCF80 text on black | 10.44:1 | AAA | Lc -63.8 | 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
#EBFAEF
oklch(97.1% 0.021 154.1)
-
Step 100
100
#D2F4DC
oklch(93.6% 0.048 154.6)
-
Step 200
200
#A8ECBE
oklch(88.5% 0.093 154.5)
-
Step 300
300 (this color)
#3FCF80
oklch(76% 0.166 154.7)
-
Step 400
400
#00BF6D
oklch(70.7% 0.176 154.8)
-
Step 500
500
#00A45D
oklch(63.1% 0.157 154.8)
-
Step 600
600
#008A4D
oklch(55.6% 0.138 154.7)
-
Step 700
700
#007440
oklch(49.1% 0.122 154.8)
-
Step 800
800
#005F33
oklch(42.6% 0.106 154.6)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#3FCF80 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) | #CEBE7B | 0.147 |
| Deuteranopia (no green cones) | #BDB285 | 0.144 |
| Tritanopia (no blue cones) | #00CDBB | 0.082 |
| Achromatopsia (no color) | #B7B7B7 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FCF80
#3FCF80
oklch(76% 0.166 154.7)
- #F085DB
#F085DB
oklch(76% 0.166 334.8)
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 #3FCF80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.016
- Emerald #06D6A0 ΔE 0.039
- Algae Green #21C36F ΔE 0.041
- Dark Mint #48C072 ΔE 0.041
- Greenblue #23C48B ΔE 0.041
- Soft Green #6FC276 ΔE 0.043
- Dark Mint Green #20C073 ΔE 0.047
- Aqua Green #12E193 ΔE 0.048
Use #3FCF80 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.