#40A939
Closest named color: Medium Green (#39AD48). oklch(65% 0.179 142.3), rgb(64, 169, 57).
Aa
Black text reads best on this color (6.95:1).
About this color
#40A939 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.179 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 0.015 away. Black text reads best on it, at 6.95:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.179) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 6.95:1 |
| White text | 3.02:1 |
Values
| HEX | #40A939 |
| RGB | rgb(64, 169, 57) |
| HSL | hsl(116, 50%, 44%) |
| OKLCH | oklch(65% 0.179 142.3) |
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 #40A939 | 3.02:1 | AA large text | Lc -61.9 | Content text, not long reading |
| Black text on #40A939 | 6.95:1 | AA | Lc 47.5 | Large or bold text, headings |
| #40A939 text on white | 3.02:1 | AA large text | Lc 56.6 | Large or bold text, headings |
| #40A939 text on black | 6.95:1 | AA | Lc -45.2 | 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
#C8E2C4
oklch(88.6% 0.049 141.4)
-
Step 300
300
#A0CF9B
oklch(80.8% 0.087 142.3)
-
Step 400
400
#69B663
oklch(70.6% 0.14 142.4)
-
Step 500
500 (this color)
#40A939
oklch(65% 0.179 142.3)
-
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
#0F500C
oklch(37.7% 0.117 142.4)
-
Step 950
950
#0C2F0A
oklch(27% 0.074 142.4)
#40A939 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) | #AD9A2B | 0.127 |
| Deuteranopia (no green cones) | #A09143 | 0.127 |
| Tritanopia (no blue cones) | #2DA492 | 0.116 |
| Achromatopsia (no color) | #949494 | 0.179 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40A939
#40A939
oklch(65% 0.179 142.3)
- #C064CE
#C064CE
oklch(65% 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 #40A939, closest first.
No curated palette has a color within ΔE 0.04 of #40A939.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.015
- Mid Green #50A747 ΔE 0.021
- Grass #5CAC2D ΔE 0.025
- Kelly Green #02AB2E ΔE 0.026
- Leaf Green #5CA904 ΔE 0.029
- Shamrock #01B44C ΔE 0.032
- Dark Pastel Green #56AE57 ΔE 0.039
- Fern #63A950 ΔE 0.041
Use #40A939 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.