#40AA00
Closest named color: Leaf Green (#5CA904). oklch(65% 0.204 138.7), rgb(64, 170, 0).
Aa
Black text reads best on this color (6.96:1).
About this color
#40AA00 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.204 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leaf Green (#5CA904), ΔE 0.023 away. Black text reads best on it, at 6.96:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.204) |
| Temperature | in between |
| Nearest name | Leaf Green (#5CA904) |
| Black text | 6.96:1 |
| White text | 3.01:1 |
Values
| HEX | #40AA00 |
| RGB | rgb(64, 170, 0) |
| HSL | hsl(97, 100%, 33%) |
| OKLCH | oklch(65% 0.204 138.7) |
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 #40AA00 | 3.01:1 | AA large text | Lc -61.7 | Content text, not long reading |
| Black text on #40AA00 | 6.96:1 | AA | Lc 47.7 | Large or bold text, headings |
| #40AA00 text on white | 3.01:1 | AA large text | Lc 56.3 | Large or bold text, headings |
| #40AA00 text on black | 6.96:1 | AA | Lc -45.4 | 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
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#E1EFDC
oklch(93.6% 0.029 137.4)
-
Step 200
200
#C7E2BF
oklch(88.4% 0.055 138.6)
-
Step 300
300
#A0D092
oklch(80.8% 0.099 138.7)
-
Step 400
400
#69B750
oklch(70.6% 0.159 138.7)
-
Step 500
500 (this color)
#40AA00
oklch(65% 0.204 138.7)
-
Step 600
600
#328900
oklch(55.5% 0.174 138.7)
-
Step 700
700
#297400
oklch(49.2% 0.154 138.7)
-
Step 800
800
#205F00
oklch(42.8% 0.134 138.7)
-
Step 900
900
#194F00
oklch(37.7% 0.118 138.8)
-
Step 950
950
#0C2F00
oklch(26.9% 0.084 138.6)
#40AA00 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) | #AF9A00 | 0.134 |
| Deuteranopia (no green cones) | #A39123 | 0.133 |
| Tritanopia (no blue cones) | #33A490 | 0.140 |
| Achromatopsia (no color) | #959595 | 0.204 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40AA00
#40AA00
oklch(65% 0.204 138.7)
- #C25DDD
#C25DDD
oklch(65.1% 0.204 318.7)
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 #40AA00, closest first.
No curated palette has a color within ΔE 0.04 of #40AA00.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leaf Green #5CA904 ΔE 0.023
- Kelly Green #02AB2E ΔE 0.023
- Grass #5CAC2D ΔE 0.033
- Medium Green #39AD48 ΔE 0.038
- Grassy Green #419C03 ΔE 0.041
- Shamrock #01B44C ΔE 0.043
- Grass Green #3F9B0B ΔE 0.044
- Leafy Green #51B73B ΔE 0.047
Use #40AA00 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.