#3FA557
Closest named color: Mid Green (#50A747). oklch(64.3% 0.148 148.4), rgb(63, 165, 87).
Aa
Black text reads best on this color (6.73:1).
About this color
#3FA557 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.148 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.022 away. Black text reads best on it, at 6.73:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.73:1 |
| White text | 3.11:1 |
Values
| HEX | #3FA557 |
| RGB | rgb(63, 165, 87) |
| HSL | hsl(134, 45%, 45%) |
| OKLCH | oklch(64.3% 0.148 148.4) |
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 #3FA557 | 3.11:1 | AA large text | Lc -63.3 | Content text, not long reading |
| Black text on #3FA557 | 6.73:1 | AA | Lc 46.2 | Large or bold text, headings |
| #3FA557 text on white | 3.11:1 | AA large text | Lc 57.9 | Large or bold text, headings |
| #3FA557 text on black | 6.73:1 | AA | Lc -43.9 | 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
#C8E1CB
oklch(88.5% 0.04 148.7)
-
Step 300
300
#A1CEA7
oklch(80.9% 0.072 148.5)
-
Step 400
400
#6BB477
oklch(70.6% 0.115 148.2)
-
Step 500
500 (this color)
#3FA557
oklch(64.3% 0.148 148.4)
-
Step 600
600
#008B38
oklch(55.6% 0.159 148.5)
-
Step 700
700
#00752E
oklch(49.1% 0.14 148.5)
-
Step 800
800
#006024
oklch(42.7% 0.122 148.4)
-
Step 900
900
#104F22
oklch(37.7% 0.097 148.5)
-
Step 950
950
#0D2E14
oklch(26.9% 0.061 148)
#3FA557 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) | #A79751 | 0.120 |
| Deuteranopia (no green cones) | #998E5C | 0.118 |
| Tritanopia (no blue cones) | #23A292 | 0.084 |
| Achromatopsia (no color) | #929292 | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FA557
#3FA557
oklch(64.3% 0.148 148.4)
- #BD69BA
#BD69BA
oklch(64.4% 0.149 328.4)
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 #3FA557, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.022
- Muted Green #5FA052 ΔE 0.027
- Seaweed Green #35AD6B ΔE 0.028
- Jade Green #2BAF6A ΔE 0.030
- Medium Green #39AD48 ΔE 0.033
- Algae #54AC68 ΔE 0.034
- Fern #63A950 ΔE 0.034
- Dark Pastel Green #56AE57 ΔE 0.034
Use #3FA557 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.