#3FA551
Closest named color: Mid Green (#50A747). oklch(64.2% 0.154 146.8), rgb(63, 165, 81).
Aa
Black text reads best on this color (6.71:1).
About this color
#3FA551 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.154 and its hue 147°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.017 away. Black text reads best on it, at 6.71:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.154) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.71:1 |
| White text | 3.12:1 |
Values
| HEX | #3FA551 |
| RGB | rgb(63, 165, 81) |
| HSL | hsl(131, 45%, 45%) |
| OKLCH | oklch(64.2% 0.154 146.8) |
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 #3FA551 | 3.12:1 | AA large text | Lc -63.4 | Content text, not long reading |
| Black text on #3FA551 | 6.71:1 | AA | Lc 46.1 | Large or bold text, headings |
| #3FA551 text on white | 3.12:1 | AA large text | Lc 58.0 | Large or bold text, headings |
| #3FA551 text on black | 6.71:1 | AA | Lc -43.8 | 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
#F1F7F2
oklch(97% 0.009 150.7)
-
Step 100
100
#E1EEE2
oklch(93.6% 0.021 147.6)
-
Step 200
200
#C8E1C9
oklch(88.5% 0.042 146.3)
-
Step 300
300
#A1CEA5
oklch(80.8% 0.074 147.2)
-
Step 400
400
#6BB573
oklch(70.8% 0.121 146.6)
-
Step 500
500 (this color)
#3FA551
oklch(64.2% 0.154 146.8)
-
Step 600
600
#008B30
oklch(55.5% 0.165 146.9)
-
Step 700
700
#007527
oklch(49% 0.146 146.9)
-
Step 800
800
#00601F
oklch(42.6% 0.127 147)
-
Step 900
900
#114F1E
oklch(37.7% 0.1 146.7)
-
Step 950
950
#0D2E13
oklch(26.9% 0.062 147.2)
#3FA551 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) | #A7974A | 0.120 |
| Deuteranopia (no green cones) | #9A8E57 | 0.119 |
| Tritanopia (no blue cones) | #25A192 | 0.092 |
| Achromatopsia (no color) | #929292 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA551
#3FA551
oklch(64.2% 0.154 146.8)
- #BC68BD
#BC68BD
oklch(64.3% 0.153 326.7)
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 #3FA551, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.017
- Medium Green #39AD48 ΔE 0.028
- Muted Green #5FA052 ΔE 0.029
- Seaweed Green #35AD6B ΔE 0.032
- Jade Green #2BAF6A ΔE 0.034
- Fern #63A950 ΔE 0.034
- Dark Pastel Green #56AE57 ΔE 0.034
- Algae #54AC68 ΔE 0.038
Use #3FA551 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.