#42AA3B
Closest named color: Medium Green (#39AD48). oklch(65.4% 0.178 142.3), rgb(66, 170, 59).
Aa
Black text reads best on this color (7.04:1).
About this color
#42AA3B is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.178 and its hue 142°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.012 away. Black text reads best on it, at 7.04:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.178) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.04:1 |
| White text | 2.98:1 |
Values
| HEX | #42AA3B |
| RGB | rgb(66, 170, 59) |
| HSL | hsl(116, 48%, 45%) |
| OKLCH | oklch(65.4% 0.178 142.3) |
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 #42AA3B | 2.98:1 | Fails | Lc -61.4 | Content text, not long reading |
| Black text on #42AA3B | 7.04:1 | AAA | Lc 48.0 | Large or bold text, headings |
| #42AA3B text on white | 2.98:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #42AA3B text on black | 7.04:1 | AAA | Lc -45.7 | 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 500.
-
Step 50
50
#F1F8F0
oklch(97.2% 0.013 141.8)
-
Step 100
100
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C8E2C5
oklch(88.6% 0.048 142.3)
-
Step 300
300
#A1CF9C
oklch(80.8% 0.086 142.2)
-
Step 400
400
#6AB663
oklch(70.7% 0.139 142.2)
-
Step 500
500 (this color)
#42AA3B
oklch(65.4% 0.178 142.3)
-
Step 600
600
#078C00
oklch(55.5% 0.188 142.3)
-
Step 700
700
#057600
oklch(49.1% 0.166 142.2)
-
Step 800
800
#036100
oklch(42.7% 0.145 142.3)
-
Step 900
900
#10500C
oklch(37.8% 0.116 142.2)
-
Step 950
950
#0C2F0A
oklch(27% 0.074 142.4)
#42AA3B 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) | #AE9B2D | 0.126 |
| Deuteranopia (no green cones) | #A19245 | 0.126 |
| Tritanopia (no blue cones) | #30A593 | 0.115 |
| Achromatopsia (no color) | #959595 | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42AA3B
#42AA3B
oklch(65.4% 0.178 142.3)
- #C165CF
#C165CF
oklch(65.3% 0.178 322.2)
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 #42AA3B, closest first.
No curated palette has a color within ΔE 0.04 of #42AA3B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.012
- Mid Green #50A747 ΔE 0.020
- Grass #5CAC2D ΔE 0.023
- Kelly Green #02AB2E ΔE 0.028
- Leaf Green #5CA904 ΔE 0.028
- Shamrock #01B44C ΔE 0.031
- Dark Pastel Green #56AE57 ΔE 0.036
- Fern #63A950 ΔE 0.039
Use #42AA3B 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.