#3BB131
Closest named color: Shamrock (#01B44C). oklch(67% 0.196 142), rgb(59, 177, 49).
Aa
Black text reads best on this color (7.51:1).
About this color
#3BB131 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.196 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Shamrock (#01B44C), ΔE 0.023 away. Black text reads best on it, at 7.51:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.196) |
| Temperature | in between |
| Nearest name | Shamrock (#01B44C) |
| Black text | 7.51:1 |
| White text | 2.79:1 |
Values
| HEX | #3BB131 |
| RGB | rgb(59, 177, 49) |
| HSL | hsl(115, 57%, 44%) |
| OKLCH | oklch(67% 0.196 142) |
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 #3BB131 | 2.79:1 | Fails | Lc -58.6 | Large or bold text, headings |
| Black text on #3BB131 | 7.51:1 | AAA | Lc 50.7 | Large or bold text, headings |
| #3BB131 text on white | 2.79:1 | Fails | Lc 53.3 | Large or bold text, headings |
| #3BB131 text on black | 7.51:1 | AAA | Lc -48.5 | 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
#F0F8EE
oklch(97% 0.016 139.4)
-
Step 100
100
#DDF0DB
oklch(93.5% 0.034 142.6)
-
Step 200
200
#C0E5BC
oklch(88.4% 0.068 142.4)
-
Step 300
300
#92D58B
oklch(81% 0.122 142.1)
-
Step 400
400 (this color)
#3BB131
oklch(67% 0.196 142)
-
Step 500
500
#13A600
oklch(63% 0.212 142)
-
Step 600
600
#0E8C00
oklch(55.6% 0.187 142)
-
Step 700
700
#0A7600
oklch(49.1% 0.165 142)
-
Step 800
800
#076100
oklch(42.8% 0.144 142)
-
Step 900
900
#055100
oklch(37.8% 0.127 142)
-
Step 950
950
#023000
oklch(26.9% 0.09 141.9)
#3BB131 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) | #B5A01B | 0.137 |
| Deuteranopia (no green cones) | #A7973E | 0.137 |
| Tritanopia (no blue cones) | #22AC98 | 0.127 |
| Achromatopsia (no color) | #9B9B9B | 0.197 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3BB131
#3BB131
oklch(67% 0.196 142)
- #CB64DB
#CB64DB
oklch(67% 0.196 322.1)
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 #3BB131, closest first.
No curated palette has a color within ΔE 0.04 of #3BB131.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Shamrock #01B44C ΔE 0.023
- Medium Green #39AD48 ΔE 0.025
- Grass #5CAC2D ΔE 0.025
- Leafy Green #51B73B ΔE 0.026
- Kelly Green #02AB2E ΔE 0.028
- Leaf Green #5CA904 ΔE 0.029
- Mid Green #50A747 ΔE 0.042
- Shamrock Green #02C14D ΔE 0.044
Use #3BB131 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.