#3FD185
Closest named color: Seaweed (#18D17B). oklch(76.6% 0.165 155.8), rgb(63, 209, 133).
Aa
Black text reads best on this color (10.67:1).
About this color
#3FD185 is a medium-light, vivid green. In OKLCH its lightness is 77%, its chroma 0.165 and its hue 156°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Seaweed (#18D17B), ΔE 0.020 away. Black text reads best on it, at 10.67:1.
| Hue family | Greens |
| Lightness | medium-light (77%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Seaweed (#18D17B) |
| Black text | 10.67:1 |
| White text | 1.96:1 |
Values
| HEX | #3FD185 |
| RGB | rgb(63, 209, 133) |
| HSL | hsl(149, 61%, 53%) |
| OKLCH | oklch(76.6% 0.165 155.8) |
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 #3FD185 | 1.96:1 | Fails | Lc -41.9 | Non-text elements, placeholder text |
| Black text on #3FD185 | 10.67:1 | AAA | Lc 66.4 | Content text, not long reading |
| #3FD185 text on white | 1.96:1 | Fails | Lc 37.5 | Non-text elements, placeholder text |
| #3FD185 text on black | 10.67:1 | AAA | Lc -64.9 | 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
#EAFAEF
oklch(97% 0.022 155.9)
-
Step 100
100
#D1F4DD
oklch(93.6% 0.048 156.6)
-
Step 200
200
#A8ECC0
oklch(88.6% 0.091 155.7)
-
Step 300
300 (this color)
#3FD185
oklch(76.6% 0.165 155.8)
-
Step 400
400
#00BF71
oklch(70.7% 0.172 155.9)
-
Step 500
500
#00A460
oklch(63.2% 0.154 155.8)
-
Step 600
600
#008A50
oklch(55.7% 0.136 155.8)
-
Step 700
700
#007442
oklch(49.1% 0.12 155.6)
-
Step 800
800
#005F36
oklch(42.7% 0.103 156.1)
-
Step 900
900
#004F2C
oklch(37.6% 0.091 156.1)
-
Step 950
950
#002F18
oklch(26.8% 0.065 156.1)
#3FD185 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) | #D0C180 | 0.148 |
| Deuteranopia (no green cones) | #BEB48A | 0.144 |
| Tritanopia (no blue cones) | #00CFBE | 0.079 |
| Achromatopsia (no color) | #B9B9B9 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FD185
#3FD185
oklch(76.6% 0.165 155.8)
- #F287DB
#F287DB
oklch(76.6% 0.165 335.6)
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 #3FD185, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Seaweed #18D17B ΔE 0.020
- Emerald #06D6A0 ΔE 0.033
- Aqua Green #12E193 ΔE 0.042
- Greenblue #23C48B ΔE 0.044
- Soft Green #6FC276 ΔE 0.046
- Dark Mint #48C072 ΔE 0.047
- Algae Green #21C36F ΔE 0.047
- Dark Mint Green #20C073 ΔE 0.053
Use #3FD185 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.