#42AD45
Closest named color: Medium Green (#39AD48). oklch(66.3% 0.174 143.7), rgb(66, 173, 69).
Aa
Black text reads best on this color (7.29:1).
About this color
#42AD45 is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.174 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.006 away. Black text reads best on it, at 7.29:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.29:1 |
| White text | 2.87:1 |
Values
| HEX | #42AD45 |
| RGB | rgb(66, 173, 69) |
| HSL | hsl(122, 45%, 47%) |
| OKLCH | oklch(66.3% 0.174 143.7) |
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 #42AD45 | 2.87:1 | Fails | Lc -59.9 | Large or bold text, headings |
| Black text on #42AD45 | 7.29:1 | AAA | Lc 49.4 | Large or bold text, headings |
| #42AD45 text on white | 2.87:1 | Fails | Lc 54.6 | Large or bold text, headings |
| #42AD45 text on black | 7.29:1 | AAA | Lc -47.2 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E1EEE0
oklch(93.6% 0.023 143.4)
-
Step 200
200
#C7E2C6
oklch(88.5% 0.048 144.2)
-
Step 300
300
#A0CF9E
oklch(80.8% 0.084 143.7)
-
Step 400
400
#68B667
oklch(70.6% 0.136 143.7)
-
Step 500
500 (this color)
#42AD45
oklch(66.3% 0.174 143.7)
-
Step 600
600
#008C18
oklch(55.5% 0.181 143.8)
-
Step 700
700
#007612
oklch(49.1% 0.161 143.7)
-
Step 800
800
#00610D
oklch(42.7% 0.14 143.7)
-
Step 900
900
#0D5012
oklch(37.7% 0.113 143.8)
-
Step 950
950
#0B2F0C
oklch(27% 0.072 143.7)
#42AD45 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) | #B09E3A | 0.127 |
| Deuteranopia (no green cones) | #A3954D | 0.126 |
| Tritanopia (no blue cones) | #2CA897 | 0.110 |
| Achromatopsia (no color) | #989898 | 0.174 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42AD45
#42AD45
oklch(66.3% 0.174 143.7)
- #C569CF
#C569CF
oklch(66.4% 0.174 323.6)
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 #42AD45, closest first.
No curated palette has a color within ΔE 0.04 of #42AD45.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.006
- Mid Green #50A747 ΔE 0.020
- Grass #5CAC2D ΔE 0.023
- Shamrock #01B44C ΔE 0.025
- Dark Pastel Green #56AE57 ΔE 0.027
- Leaf Green #5CA904 ΔE 0.034
- Fern #63A950 ΔE 0.034
- Kelly Green #02AB2E ΔE 0.035
Use #42AD45 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.