#3FB544
Closest named color: Leafy Green (#51B73B). oklch(68.3% 0.186 143.8), rgb(63, 181, 68).
Aa
Black text reads best on this color (7.90:1).
About this color
#3FB544 is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.186 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.015 away. Black text reads best on it, at 7.90:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.186) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 7.90:1 |
| White text | 2.65:1 |
Values
| HEX | #3FB544 |
| RGB | rgb(63, 181, 68) |
| HSL | hsl(123, 48%, 48%) |
| OKLCH | oklch(68.3% 0.186 143.8) |
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 #3FB544 | 2.65:1 | Fails | Lc -56.4 | Large or bold text, headings |
| Black text on #3FB544 | 7.90:1 | AAA | Lc 52.7 | Large or bold text, headings |
| #3FB544 text on white | 2.65:1 | Fails | Lc 51.3 | Large or bold text, headings |
| #3FB544 text on black | 7.90:1 | AAA | Lc -50.6 | Large or bold text, headings |
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 400.
-
Step 50
50
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DDF0DC
oklch(93.6% 0.033 143.9)
-
Step 200
200
#C0E5BF
oklch(88.5% 0.064 144.3)
-
Step 300
300
#92D490
oklch(80.8% 0.116 143.7)
-
Step 400
400 (this color)
#3FB544
oklch(68.3% 0.186 143.8)
-
Step 500
500
#00A71F
oklch(63.2% 0.206 143.8)
-
Step 600
600
#008C19
oklch(55.6% 0.181 143.9)
-
Step 700
700
#007613
oklch(49.1% 0.16 143.8)
-
Step 800
800
#00610E
oklch(42.8% 0.139 143.9)
-
Step 900
900
#00510A
oklch(37.7% 0.123 143.9)
-
Step 950
950
#003004
oklch(26.8% 0.087 144)
#3FB544 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) | #B8A537 | 0.135 |
| Deuteranopia (no green cones) | #AA9B4E | 0.136 |
| Tritanopia (no blue cones) | #23B09D | 0.117 |
| Achromatopsia (no color) | #9F9F9F | 0.187 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3FB544
#3FB544
oklch(68.3% 0.186 143.8)
- #CF6BD9
#CF6BD9
oklch(68.3% 0.185 323.9)
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 #3FB544, closest first.
No curated palette has a color within ΔE 0.04 of #3FB544.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.015
- Shamrock #01B44C ΔE 0.020
- Medium Green #39AD48 ΔE 0.025
- Grass #5CAC2D ΔE 0.029
- Cool Green #33B864 ΔE 0.031
- Shamrock Green #02C14D ΔE 0.034
- Dark Pastel Green #56AE57 ΔE 0.037
- Leaf Green #5CA904 ΔE 0.040
Use #3FB544 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.