#42AE1B
Closest named color: Leaf Green (#5CA904). oklch(66.2% 0.2 139.5), rgb(66, 174, 27).
Aa
Black text reads best on this color (7.30:1).
About this color
#42AE1B is a medium-light, vivid green. In OKLCH its lightness is 66%, its chroma 0.200 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leaf Green (#5CA904), ΔE 0.021 away. Black text reads best on it, at 7.30:1.
| Hue family | Greens |
| Lightness | medium-light (66%) |
| Chroma | vivid (0.200) |
| Temperature | in between |
| Nearest name | Leaf Green (#5CA904) |
| Black text | 7.30:1 |
| White text | 2.87:1 |
Values
| HEX | #42AE1B |
| RGB | rgb(66, 174, 27) |
| HSL | hsl(104, 73%, 39%) |
| OKLCH | oklch(66.2% 0.2 139.5) |
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 #42AE1B | 2.87:1 | Fails | Lc -59.8 | Large or bold text, headings |
| Black text on #42AE1B | 7.30:1 | AAA | Lc 49.5 | Large or bold text, headings |
| #42AE1B text on white | 2.87:1 | Fails | Lc 54.5 | Large or bold text, headings |
| #42AE1B text on black | 7.30:1 | AAA | Lc -47.3 | 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
#F1F8EF
oklch(97.1% 0.014 138.7)
-
Step 100
100
#E0EFDD
oklch(93.6% 0.029 140.5)
-
Step 200
200
#C7E2C0
oklch(88.4% 0.054 139.3)
-
Step 300
300
#A0D093
oklch(80.8% 0.098 139.1)
-
Step 400
400
#68B753
oklch(70.6% 0.157 139.4)
-
Step 500
500 (this color)
#42AE1B
oklch(66.2% 0.2 139.5)
-
Step 600
600
#2C8A00
oklch(55.6% 0.177 139.5)
-
Step 700
700
#247400
oklch(49.1% 0.156 139.5)
-
Step 800
800
#1C5F00
oklch(42.6% 0.136 139.5)
-
Step 900
900
#165000
oklch(37.9% 0.121 139.5)
-
Step 950
950
#0B2F02
oklch(26.9% 0.082 139.7)
#42AE1B 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) | #B39E00 | 0.133 |
| Deuteranopia (no green cones) | #A6952F | 0.133 |
| Tritanopia (no blue cones) | #34A894 | 0.136 |
| Achromatopsia (no color) | #989898 | 0.201 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42AE1B
#42AE1B
oklch(66.2% 0.2 139.5)
- #C661DE
#C661DE
oklch(66.2% 0.201 319.6)
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 #42AE1B, closest first.
No curated palette has a color within ΔE 0.04 of #42AE1B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leaf Green #5CA904 ΔE 0.021
- Grass #5CAC2D ΔE 0.026
- Kelly Green #02AB2E ΔE 0.026
- Medium Green #39AD48 ΔE 0.032
- Leafy Green #51B73B ΔE 0.034
- Shamrock #01B44C ΔE 0.034
- Mid Green #50A747 ΔE 0.044
- Frog Green #58BC08 ΔE 0.047
Use #42AE1B 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.