#40B030
Closest named color: Grass (#5CAC2D). oklch(66.8% 0.193 141.3), rgb(64, 176, 48).
Aa
Black text reads best on this color (7.47:1).
About this color
#40B030 is a medium-light, vivid green. In OKLCH its lightness is 67%, its chroma 0.193 and its hue 141°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grass (#5CAC2D), ΔE 0.022 away. Black text reads best on it, at 7.47:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | vivid (0.193) |
| Temperature | in between |
| Nearest name | Grass (#5CAC2D) |
| Black text | 7.47:1 |
| White text | 2.81:1 |
Values
| HEX | #40B030 |
| RGB | rgb(64, 176, 48) |
| HSL | hsl(113, 57%, 44%) |
| OKLCH | oklch(66.8% 0.193 141.3) |
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 #40B030 | 2.81:1 | Fails | Lc -58.9 | Large or bold text, headings |
| Black text on #40B030 | 7.47:1 | AAA | Lc 50.4 | Large or bold text, headings |
| #40B030 text on white | 2.81:1 | Fails | Lc 53.6 | Large or bold text, headings |
| #40B030 text on black | 7.47:1 | AAA | Lc -48.2 | 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
#E0EFDE
oklch(93.6% 0.028 142)
-
Step 200
200
#C7E2C2
oklch(88.4% 0.052 140.8)
-
Step 300
300
#9FD097
oklch(80.8% 0.094 141.1)
-
Step 400
400
#66B75B
oklch(70.6% 0.15 141.4)
-
Step 500
500 (this color)
#40B030
oklch(66.8% 0.193 141.3)
-
Step 600
600
#1A8B00
oklch(55.5% 0.184 141.3)
-
Step 700
700
#147500
oklch(49% 0.162 141.3)
-
Step 800
800
#0F6000
oklch(42.6% 0.141 141.3)
-
Step 900
900
#0B5000
oklch(37.6% 0.124 141.3)
-
Step 950
950
#0A2F05
oklch(26.9% 0.08 141.2)
#40B030 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) | #B4A019 | 0.132 |
| Deuteranopia (no green cones) | #A7973D | 0.133 |
| Tritanopia (no blue cones) | #2DAA97 | 0.128 |
| Achromatopsia (no color) | #9A9A9A | 0.194 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #40B030
#40B030
oklch(66.8% 0.193 141.3)
- #C965DB
#C965DB
oklch(66.9% 0.193 321.3)
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 #40B030, closest first.
No curated palette has a color within ΔE 0.04 of #40B030.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grass #5CAC2D ΔE 0.022
- Medium Green #39AD48 ΔE 0.024
- Shamrock #01B44C ΔE 0.025
- Leaf Green #5CA904 ΔE 0.026
- Leafy Green #51B73B ΔE 0.026
- Kelly Green #02AB2E ΔE 0.029
- Mid Green #50A747 ΔE 0.039
- Dark Pastel Green #56AE57 ΔE 0.045
Use #40B030 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.