#66BE38
Closest named color: Dark Lime Green (#7EBD01). oklch(72% 0.188 136.9), rgb(102, 190, 56).
Aa
Black text reads best on this color (8.98:1).
About this color
#66BE38 is a medium-light, vivid green. In OKLCH its lightness is 72%, its chroma 0.188 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Lime Green (#7EBD01), ΔE 0.026 away. Black text reads best on it, at 8.98:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | vivid (0.188) |
| Temperature | in between |
| Nearest name | Dark Lime Green (#7EBD01) |
| Black text | 8.98:1 |
| White text | 2.33:1 |
Values
| HEX | #66BE38 |
| RGB | rgb(102, 190, 56) |
| HSL | hsl(99, 54%, 48%) |
| OKLCH | oklch(72% 0.188 136.9) |
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 #66BE38 | 2.33:1 | Fails | Lc -50.7 | Large or bold text, headings |
| Black text on #66BE38 | 8.98:1 | AAA | Lc 58.2 | Large or bold text, headings |
| #66BE38 text on white | 2.33:1 | Fails | Lc 45.8 | Large or bold text, headings |
| #66BE38 text on black | 8.98:1 | AAA | Lc -56.3 | 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 400.
-
Step 50
50
#F1F8EE
oklch(97.1% 0.015 136.1)
-
Step 100
100
#E0F0D9
oklch(93.7% 0.035 136)
-
Step 200
200
#C5E4BA
oklch(88.5% 0.065 137.5)
-
Step 300
300
#9CD286
oklch(80.8% 0.117 137)
-
Step 400
400 (this color)
#66BE38
oklch(72% 0.188 136.9)
-
Step 500
500
#48A200
oklch(63.2% 0.192 137)
-
Step 600
600
#3C8800
oklch(55.6% 0.168 136.9)
-
Step 700
700
#317200
oklch(49% 0.148 136.9)
-
Step 800
800
#275E00
oklch(42.7% 0.129 137)
-
Step 900
900
#1F4E00
oklch(37.6% 0.114 137)
-
Step 950
950
#102F00
oklch(27.1% 0.082 137)
#66BE38 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) | #C4AE22 | 0.118 |
| Deuteranopia (no green cones) | #B9A745 | 0.119 |
| Tritanopia (no blue cones) | #61B7A3 | 0.132 |
| Achromatopsia (no color) | #AAAAAA | 0.189 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BE38
#66BE38
oklch(72% 0.188 136.9)
- #D37AF1
#D37AF1
oklch(72.1% 0.187 317.1)
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 #66BE38, closest first.
No curated palette has a color within ΔE 0.04 of #66BE38.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Lime Green #7EBD01 ΔE 0.026
- Frog Green #58BC08 ΔE 0.027
- Leafy Green #51B73B ΔE 0.029
- Dark Lime #84B701 ΔE 0.033
- Turtle Green #75B84F ΔE 0.034
- Apple #6ECB3C ΔE 0.038
- Shamrock Green #02C14D ΔE 0.043
- Apple Green #76CD26 ΔE 0.049
Use #66BE38 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.