#3FA831
Closest named color: Medium Green (#39AD48). oklch(64.7% 0.183 141.4), rgb(63, 168, 49).
Aa
Black text reads best on this color (6.85:1).
About this color
#3FA831 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.183 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.021 away. Black text reads best on it, at 6.85:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.183) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 6.85:1 |
| White text | 3.06:1 |
Values
| HEX | #3FA831 |
| RGB | rgb(63, 168, 49) |
| HSL | hsl(113, 55%, 43%) |
| OKLCH | oklch(64.7% 0.183 141.4) |
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 #3FA831 | 3.06:1 | AA large text | Lc -62.5 | Content text, not long reading |
| Black text on #3FA831 | 6.85:1 | AA | Lc 47.0 | Large or bold text, headings |
| #3FA831 text on white | 3.06:1 | AA large text | Lc 57.1 | Large or bold text, headings |
| #3FA831 text on black | 6.85:1 | AA | Lc -44.7 | Non-text elements, placeholder 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 500.
-
Step 50
50
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EFDF
oklch(93.7% 0.026 141.8)
-
Step 200
200
#C8E2C3
oklch(88.5% 0.05 140.6)
-
Step 300
300
#A0D099
oklch(80.9% 0.091 141.4)
-
Step 400
400
#6AB65F
oklch(70.6% 0.143 141.3)
-
Step 500
500 (this color)
#3FA831
oklch(64.7% 0.183 141.4)
-
Step 600
600
#198C00
oklch(55.7% 0.185 141.4)
-
Step 700
700
#137500
oklch(49% 0.163 141.4)
-
Step 800
800
#0E6000
oklch(42.6% 0.141 141.4)
-
Step 900
900
#105006
oklch(37.7% 0.12 141.4)
-
Step 950
950
#0C2F08
oklch(27% 0.076 141.6)
#3FA831 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) | #AC991E | 0.126 |
| Deuteranopia (no green cones) | #9F903D | 0.127 |
| Tritanopia (no blue cones) | #2EA390 | 0.120 |
| Achromatopsia (no color) | #939393 | 0.184 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA831
#3FA831
oklch(64.7% 0.183 141.4)
- #BF61D0
#BF61D0
oklch(64.6% 0.184 321.3)
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 #3FA831, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.021
- Kelly Green #02AB2E ΔE 0.023
- Mid Green #50A747 ΔE 0.026
- Leaf Green #5CA904 ΔE 0.027
- Grass #5CAC2D ΔE 0.027
- Shamrock #01B44C ΔE 0.036
- Grassy Green #419C03 ΔE 0.036
- Grass Green #3F9B0B ΔE 0.039
Use #3FA831 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.