#42A420
Closest named color: Grassy Green (#419C03). oklch(63.6% 0.187 139.4), rgb(66, 164, 32).
Aa
Black text reads best on this color (6.56:1).
About this color
#42A420 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.187 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grassy Green (#419C03), ΔE 0.024 away. Black text reads best on it, at 6.56:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.187) |
| Temperature | in between |
| Nearest name | Grassy Green (#419C03) |
| Black text | 6.56:1 |
| White text | 3.19:1 |
Values
| HEX | #42A420 |
| RGB | rgb(66, 164, 32) |
| HSL | hsl(105, 67%, 38%) |
| OKLCH | oklch(63.6% 0.187 139.4) |
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 #42A420 | 3.19:1 | AA large text | Lc -64.2 | Content text, not long reading |
| Black text on #42A420 | 6.56:1 | AA | Lc 45.3 | Large or bold text, headings |
| #42A420 text on white | 3.19:1 | AA large text | Lc 58.8 | Large or bold text, headings |
| #42A420 text on black | 6.56:1 | AA | Lc -42.9 | Non-text elements, placeholder text |
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
#E1EEDE
oklch(93.5% 0.025 139.8)
-
Step 200
200
#C8E2C2
oklch(88.5% 0.051 139.8)
-
Step 300
300
#A2CF97
oklch(80.8% 0.09 139.5)
-
Step 400
400
#6DB65A
oklch(70.7% 0.146 139.4)
-
Step 500
500 (this color)
#42A420
oklch(63.6% 0.187 139.4)
-
Step 600
600
#2D8A00
oklch(55.6% 0.177 139.4)
-
Step 700
700
#257400
oklch(49.1% 0.156 139.3)
-
Step 800
800
#1D5F00
oklch(42.7% 0.135 139.3)
-
Step 900
900
#164F00
oklch(37.6% 0.119 139.4)
-
Step 950
950
#0E2F05
oklch(27% 0.078 139.6)
#42A420 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) | #A99500 | 0.124 |
| Deuteranopia (no green cones) | #9D8D30 | 0.124 |
| Tritanopia (no blue cones) | #369E8C | 0.128 |
| Achromatopsia (no color) | #909090 | 0.188 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42A420
#42A420
oklch(63.6% 0.187 139.4)
- #BA5ED1
#BA5ED1
oklch(63.6% 0.187 319.3)
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 #42A420, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grassy Green #419C03 ΔE 0.024
- Kelly Green #02AB2E ΔE 0.026
- Grass Green #3F9B0B ΔE 0.027
- Leaf Green #5CA904 ΔE 0.029
- Medium Green #39AD48 ΔE 0.034
- Mid Green #50A747 ΔE 0.035
- Grass #5CAC2D ΔE 0.035
- Shamrock #01B44C ΔE 0.048
Use #42A420 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.