#40BF19
Closest named color: Frog Green (#58BC08). oklch(70.7% 0.22 140.2), rgb(64, 191, 25).
Aa
Black text reads best on this color (8.68:1).
About this color
#40BF19 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.220 and its hue 140°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Frog Green (#58BC08), ΔE 0.016 away. Black text reads best on it, at 8.68:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.220) |
| Temperature | in between |
| Nearest name | Frog Green (#58BC08) |
| Black text | 8.68:1 |
| White text | 2.41:1 |
Values
| HEX | #40BF19 |
| RGB | rgb(64, 191, 25) |
| HSL | hsl(106, 77%, 42%) |
| OKLCH | oklch(70.7% 0.22 140.2) |
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 #40BF19 | 2.41:1 | Fails | Lc -52.0 | Large or bold text, headings |
| Black text on #40BF19 | 8.68:1 | AAA | Lc 56.9 | Large or bold text, headings |
| #40BF19 text on white | 2.41:1 | Fails | Lc 47.1 | Large or bold text, headings |
| #40BF19 text on black | 8.68:1 | AAA | Lc -55.0 | 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
#EFF9ED
oklch(97.1% 0.019 140.5)
-
Step 100
100
#DCF1D8
oklch(93.6% 0.04 140.7)
-
Step 200
200
#BFE6B6
oklch(88.5% 0.077 139.8)
-
Step 300
300
#8FD680
oklch(80.8% 0.137 140.1)
-
Step 400
400 (this color)
#40BF19
oklch(70.7% 0.22 140.2)
-
Step 500
500
#2FA500
oklch(63.2% 0.204 140.2)
-
Step 600
600
#268B00
oklch(55.7% 0.18 140.3)
-
Step 700
700
#1F7500
oklch(49.2% 0.159 140.2)
-
Step 800
800
#186000
oklch(42.8% 0.138 140.2)
-
Step 900
900
#125000
oklch(37.7% 0.122 140.2)
-
Step 950
950
#073000
oklch(27% 0.088 140.4)
#40BF19 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) | #C4AD00 | 0.148 |
| Deuteranopia (no green cones) | #B6A331 | 0.148 |
| Tritanopia (no blue cones) | #29B9A2 | 0.147 |
| Achromatopsia (no color) | #A7A7A7 | 0.221 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40BF19
#40BF19
oklch(70.7% 0.22 140.2)
- #DA68F3
#DA68F3
oklch(70.6% 0.22 320.1)
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 #40BF19, closest first.
No curated palette has a color within ΔE 0.04 of #40BF19.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Frog Green #58BC08 ΔE 0.016
- Shamrock Green #02C14D ΔE 0.032
- Leafy Green #51B73B ΔE 0.035
- Lime Green #32CD32 ΔE 0.038
- Dark Lime Green #7EBD01 ΔE 0.050
- Shamrock #01B44C ΔE 0.055
- Apple #6ECB3C ΔE 0.056
- Grass #5CAC2D ΔE 0.059
Use #40BF19 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.