#3B9540
Closest named color: Kelley Green (#009337). oklch(59.6% 0.149 144.3), rgb(59, 149, 64).
Aa
Black text reads best on this color (5.55:1).
About this color
#3B9540 is a medium-dark, vivid green. In OKLCH its lightness is 60%, its chroma 0.149 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Kelley Green (#009337), ΔE 0.028 away. Black text reads best on it, at 5.55:1.
| Hue family | Greens |
| Lightness | medium-dark (60%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Kelley Green (#009337) |
| Black text | 5.55:1 |
| White text | 3.77:1 |
Values
| HEX | #3B9540 |
| RGB | rgb(59, 149, 64) |
| HSL | hsl(123, 43%, 41%) |
| OKLCH | oklch(59.6% 0.149 144.3) |
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 #3B9540 | 3.77:1 | AA large text | Lc -70.5 | Content text, not long reading |
| Black text on #3B9540 | 5.55:1 | AA | Lc 39.1 | Non-text elements, placeholder text |
| #3B9540 text on white | 3.77:1 | AA large text | Lc 65.0 | Content text, not long reading |
| #3B9540 text on black | 5.55:1 | AA | Lc -36.7 | 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
#F2F7F1
oklch(97.1% 0.01 140.5)
-
Step 100
100
#E2EEE1
oklch(93.7% 0.021 143.2)
-
Step 200
200
#CAE1C9
oklch(88.6% 0.041 144.1)
-
Step 300
300
#A4CEA3
oklch(81% 0.074 144.3)
-
Step 400
400
#71B471
oklch(70.8% 0.118 144.2)
-
Step 500
500 (this color)
#3B9540
oklch(59.6% 0.149 144.3)
-
Step 600
600
#208A2B
oklch(55.5% 0.162 144.3)
-
Step 700
700
#0F751D
oklch(49.1% 0.151 144.3)
-
Step 800
800
#135F1B
oklch(42.6% 0.124 144.3)
-
Step 900
900
#194E1D
oklch(37.6% 0.097 144.6)
-
Step 950
950
#102E12
oklch(27% 0.062 144.9)
#3B9540 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) | #988838 | 0.112 |
| Deuteranopia (no green cones) | #8C8046 | 0.111 |
| Tritanopia (no blue cones) | #2A9182 | 0.093 |
| Achromatopsia (no color) | #838383 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3B9540
#3B9540
oklch(59.6% 0.149 144.3)
- #AA5CB0
#AA5CB0
oklch(59.7% 0.149 324.6)
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 #3B9540, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Kelley Green #009337 ΔE 0.028
- Fern Green #548D44 ΔE 0.032
- Light Forest Green #4F9153 ΔE 0.035
- Irish Green #019529 ΔE 0.035
- Sap Green #5C8B15 ΔE 0.040
- Mossy Green #638B27 ΔE 0.042
- Grass Green #3F9B0B ΔE 0.043
- Forest Green #228B22 ΔE 0.043
Use #3B9540 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.