#42AB4E
Closest named color: Medium Green (#39AD48). oklch(65.9% 0.163 145.4), rgb(66, 171, 78).
Aa
Black text reads best on this color (7.16:1).
About this color
#42AB4E is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.163 and its hue 145°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Medium Green (#39AD48), ΔE 0.011 away. Black text reads best on it, at 7.16:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.163) |
| Temperature | in between |
| Nearest name | Medium Green (#39AD48) |
| Black text | 7.16:1 |
| White text | 2.93:1 |
Values
| HEX | #42AB4E |
| RGB | rgb(66, 171, 78) |
| HSL | hsl(127, 44%, 46%) |
| OKLCH | oklch(65.9% 0.163 145.4) |
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 #42AB4E | 2.93:1 | Fails | Lc -60.7 | Content text, not long reading |
| Black text on #42AB4E | 7.16:1 | AAA | Lc 48.7 | Large or bold text, headings |
| #42AB4E text on white | 2.93:1 | Fails | Lc 55.4 | Large or bold text, headings |
| #42AB4E text on black | 7.16:1 | AAA | Lc -46.4 | 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
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEE1
oklch(93.6% 0.022 145.4)
-
Step 200
200
#C8E1C8
oklch(88.4% 0.043 145.2)
-
Step 300
300
#A0CFA1
oklch(80.9% 0.081 145.3)
-
Step 400
400
#69B66E
oklch(70.8% 0.129 145.5)
-
Step 500
500 (this color)
#42AB4E
oklch(65.9% 0.163 145.4)
-
Step 600
600
#008C27
oklch(55.7% 0.173 145.4)
-
Step 700
700
#00761F
oklch(49.2% 0.153 145.3)
-
Step 800
800
#006118
oklch(42.8% 0.133 145.4)
-
Step 900
900
#0E4F19
oklch(37.5% 0.106 145.5)
-
Step 950
950
#0C2F10
oklch(27.1% 0.068 145.4)
#42AB4E 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) | #AE9C45 | 0.125 |
| Deuteranopia (no green cones) | #A09355 | 0.124 |
| Tritanopia (no blue cones) | #2AA796 | 0.099 |
| Achromatopsia (no color) | #979797 | 0.164 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42AB4E
#42AB4E
oklch(65.9% 0.163 145.4)
- #C36AC7
#C36AC7
oklch(65.9% 0.163 325.6)
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 #42AB4E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Medium Green #39AD48 ΔE 0.011
- Mid Green #50A747 ΔE 0.013
- Dark Pastel Green #56AE57 ΔE 0.022
- Fern #63A950 ΔE 0.028
- Jade Green #2BAF6A ΔE 0.030
- Grass #5CAC2D ΔE 0.032
- Seaweed Green #35AD6B ΔE 0.032
- Shamrock #01B44C ΔE 0.032
Use #42AB4E 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.