#40BB44
Closest named color: Leafy Green (#51B73B). oklch(69.9% 0.193 143.6), rgb(64, 187, 68).
Aa
Black text reads best on this color (8.40:1).
About this color
#40BB44 is a medium-light, vivid green. In OKLCH its lightness is 70%, its chroma 0.193 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.013 away. Black text reads best on it, at 8.40:1.
| Hue family | Greens |
| Lightness | medium-light (70%) |
| Chroma | vivid (0.193) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 8.40:1 |
| White text | 2.49:1 |
Values
| HEX | #40BB44 |
| RGB | rgb(64, 187, 68) |
| HSL | hsl(122, 49%, 49%) |
| OKLCH | oklch(69.9% 0.193 143.6) |
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 #40BB44 | 2.49:1 | Fails | Lc -53.6 | Large or bold text, headings |
| Black text on #40BB44 | 8.40:1 | AAA | Lc 55.4 | Large or bold text, headings |
| #40BB44 text on white | 2.49:1 | Fails | Lc 48.6 | Large or bold text, headings |
| #40BB44 text on black | 8.40:1 | AAA | Lc -53.4 | 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 400.
-
Step 50
50
#EFF8EF
oklch(97% 0.015 145.5)
-
Step 100
100
#DDF0DB
oklch(93.5% 0.034 142.6)
-
Step 200
200
#BFE5BD
oklch(88.4% 0.067 143.7)
-
Step 300
300
#90D58E
oklch(80.9% 0.12 143.7)
-
Step 400
400 (this color)
#40BB44
oklch(69.9% 0.193 143.6)
-
Step 500
500
#00A71C
oklch(63.2% 0.207 143.6)
-
Step 600
600
#008C16
oklch(55.5% 0.182 143.6)
-
Step 700
700
#007611
oklch(49.1% 0.161 143.6)
-
Step 800
800
#00610C
oklch(42.7% 0.14 143.6)
-
Step 900
900
#005108
oklch(37.7% 0.124 143.6)
-
Step 950
950
#003003
oklch(26.8% 0.088 143.6)
#40BB44 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) | #BFAA36 | 0.141 |
| Deuteranopia (no green cones) | #B0A04E | 0.140 |
| Tritanopia (no blue cones) | #22B6A2 | 0.121 |
| Achromatopsia (no color) | #A4A4A4 | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BB44
#40BB44
oklch(69.9% 0.193 143.6)
- #D66EE1
#D66EE1
oklch(70% 0.192 323.7)
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 #40BB44, closest first.
No curated palette has a color within ΔE 0.04 of #40BB44.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.013
- Shamrock Green #02C14D ΔE 0.021
- Frog Green #58BC08 ΔE 0.031
- Shamrock #01B44C ΔE 0.032
- Cool Green #33B864 ΔE 0.036
- Grass #5CAC2D ΔE 0.041
- Algae Green #21C36F ΔE 0.042
- Medium Green #39AD48 ΔE 0.043
Use #40BB44 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.