#42BF02
Closest named color: Frog Green (#58BC08). oklch(70.7% 0.224 139.4), rgb(66, 191, 2).
Aa
Black text reads best on this color (8.68:1).
About this color
#42BF02 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.224 and its hue 139°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Frog Green (#58BC08), ΔE 0.017 away. Black text reads best on it, at 8.68:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.224) |
| Temperature | in between |
| Nearest name | Frog Green (#58BC08) |
| Black text | 8.68:1 |
| White text | 2.41:1 |
Values
| HEX | #42BF02 |
| RGB | rgb(66, 191, 2) |
| HSL | hsl(100, 98%, 38%) |
| OKLCH | oklch(70.7% 0.224 139.4) |
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 #42BF02 | 2.41:1 | Fails | Lc -52.0 | Large or bold text, headings |
| Black text on #42BF02 | 8.68:1 | AAA | Lc 56.9 | Large or bold text, headings |
| #42BF02 text on white | 2.41:1 | Fails | Lc 47.0 | Large or bold text, headings |
| #42BF02 text on black | 8.68:1 | AAA | Lc -55.0 | 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 400.
-
Step 50
50
#EFF9ED
oklch(97.1% 0.019 140.5)
-
Step 100
100
#DCF1D7
oklch(93.6% 0.041 139.7)
-
Step 200
200
#BFE6B5
oklch(88.4% 0.078 139.3)
-
Step 300
300
#8FD67D
oklch(80.8% 0.14 139.5)
-
Step 400
400 (this color)
#42BF02
oklch(70.7% 0.224 139.4)
-
Step 500
500
#37A400
oklch(63.1% 0.201 139.4)
-
Step 600
600
#2D8A00
oklch(55.6% 0.177 139.4)
-
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
#164F00
oklch(37.6% 0.119 139.4)
-
Step 950
950
#0A3000
oklch(27.2% 0.086 139.4)
#42BF02 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) | #C5AD00 | 0.151 |
| Deuteranopia (no green cones) | #B6A329 | 0.147 |
| Tritanopia (no blue cones) | #2FB8A2 | 0.153 |
| Achromatopsia (no color) | #A7A7A7 | 0.225 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #42BF02
#42BF02
oklch(70.7% 0.224 139.4)
- #DA67F6
#DA67F6
oklch(70.6% 0.224 319.4)
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 #42BF02, closest first.
No curated palette has a color within ΔE 0.04 of #42BF02.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Frog Green #58BC08 ΔE 0.017
- Shamrock Green #02C14D ΔE 0.037
- Lime Green #32CD32 ΔE 0.038
- Leafy Green #51B73B ΔE 0.039
- Dark Lime Green #7EBD01 ΔE 0.051
- Apple #6ECB3C ΔE 0.057
- Shamrock #01B44C ΔE 0.059
- Dark Lime #84B701 ΔE 0.060
Use #42BF02 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.