#42AA40
Closest named color: Medium Green (#39AD48). oklch(65.4% 0.174 143), rgb(66, 170, 64).
Aa
Black text reads best on this color (7.05:1).
About this color
#42AA40 is a medium-light, vivid green. In OKLCH its lightness is 65%, its chroma 0.174 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.010 away. Black text reads best on it, at 7.05:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | vivid (0.174) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.05:1 |
| White text | 2.97:1 |
Values
| HEX | #42AA40 |
| RGB | rgb(66, 170, 64) |
| HSL | hsl(119, 45%, 46%) |
| OKLCH | oklch(65.4% 0.174 143) |
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 #42AA40 | 2.97:1 | Fails | Lc -61.3 | Content text, not long reading |
| Black text on #42AA40 | 7.05:1 | AAA | Lc 48.1 | Large or bold text, headings |
| #42AA40 text on white | 2.97:1 | Fails | Lc 56.0 | Large or bold text, headings |
| #42AA40 text on black | 7.05:1 | AAA | Lc -45.8 | 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
#E1EEDF
oklch(93.5% 0.024 141.5)
-
Step 200
200
#C8E2C5
oklch(88.6% 0.048 142.3)
-
Step 300
300
#A1CF9D
oklch(80.9% 0.084 142.7)
-
Step 400
400
#6AB666
oklch(70.7% 0.136 142.9)
-
Step 500
500 (this color)
#42AA40
oklch(65.4% 0.174 143)
-
Step 600
600
#008C0C
oklch(55.5% 0.186 143)
-
Step 700
700
#007608
oklch(49.1% 0.164 143)
-
Step 800
800
#006105
oklch(42.7% 0.143 143)
-
Step 900
900
#105010
oklch(37.8% 0.114 142.9)
-
Step 950
950
#0C2F0C
oklch(27% 0.072 143.3)
#42AA40 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) | #AE9B34 | 0.126 |
| Deuteranopia (no green cones) | #A19249 | 0.126 |
| Tritanopia (no blue cones) | #2FA593 | 0.110 |
| Achromatopsia (no color) | #969696 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42AA40
#42AA40
oklch(65.4% 0.174 143)
- #C166CD
#C166CD
oklch(65.3% 0.174 322.8)
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 #42AA40, closest first.
No curated palette has a color within ΔE 0.04 of #42AA40.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.010
- Mid Green #50A747 ΔE 0.017
- Grass #5CAC2D ΔE 0.025
- Shamrock #01B44C ΔE 0.031
- Kelly Green #02AB2E ΔE 0.031
- Leaf Green #5CA904 ΔE 0.032
- Dark Pastel Green #56AE57 ΔE 0.032
- Fern #63A950 ΔE 0.036
Use #42AA40 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.