#40B43B
Closest named color: Leafy Green (#51B73B). oklch(68% 0.191 142.5), rgb(64, 180, 59).
Aa
Black text reads best on this color (7.80:1).
About this color
#40B43B is a medium-light, vivid green. In OKLCH its lightness is 68%, its chroma 0.191 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.016 away. Black text reads best on it, at 7.80:1.
| Hue family | Greens |
| Lightness | medium-light (68%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 7.80:1 |
| White text | 2.68:1 |
Values
| HEX | #40B43B |
| RGB | rgb(64, 180, 59) |
| HSL | hsl(118, 51%, 47%) |
| OKLCH | oklch(68% 0.191 142.5) |
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 #40B43B | 2.68:1 | Fails | Lc -57.0 | Large or bold text, headings |
| Black text on #40B43B | 7.80:1 | AAA | Lc 52.3 | Large or bold text, headings |
| #40B43B text on white | 2.68:1 | Fails | Lc 51.8 | Large or bold text, headings |
| #40B43B text on black | 7.80:1 | AAA | Lc -50.1 | 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
#F0F8EF
oklch(97.1% 0.015 142.2)
-
Step 100
100
#DDF0DB
oklch(93.5% 0.034 142.6)
-
Step 200
200
#C1E5BD
oklch(88.5% 0.066 142.3)
-
Step 300
300
#92D48D
oklch(80.8% 0.119 142.7)
-
Step 400
400 (this color)
#40B43B
oklch(68% 0.191 142.5)
-
Step 500
500
#00A702
oklch(63.1% 0.214 142.6)
-
Step 600
600
#008C01
oklch(55.5% 0.188 142.5)
-
Step 700
700
#007601
oklch(49% 0.166 142.6)
-
Step 800
800
#006101
oklch(42.7% 0.145 142.6)
-
Step 900
900
#005100
oklch(37.7% 0.128 142.5)
-
Step 950
950
#003100
oklch(27.1% 0.092 142.5)
#40B43B 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) | #B8A42B | 0.135 |
| Deuteranopia (no green cones) | #AA9A46 | 0.136 |
| Tritanopia (no blue cones) | #28AF9B | 0.122 |
| Achromatopsia (no color) | #9E9E9E | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40B43B
#40B43B
oklch(68% 0.191 142.5)
- #CE69DC
#CE69DC
oklch(68.1% 0.191 322.6)
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 #40B43B, closest first.
No curated palette has a color within ΔE 0.04 of #40B43B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.016
- Shamrock #01B44C ΔE 0.022
- Grass #5CAC2D ΔE 0.026
- Medium Green #39AD48 ΔE 0.027
- Leaf Green #5CA904 ΔE 0.035
- Shamrock Green #02C14D ΔE 0.036
- Kelly Green #02AB2E ΔE 0.038
- Cool Green #33B864 ΔE 0.038
Use #40B43B 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.