#66E065
Closest named color: Fresh Green (#69D84F). oklch(81% 0.197 143.4), rgb(102, 224, 101).
Aa
Black text reads best on this color (12.41:1).
About this color
#66E065 is a light, vivid green. In OKLCH its lightness is 81%, its chroma 0.197 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Fresh Green (#69D84F), ΔE 0.025 away. Black text reads best on it, at 12.41:1.
| Hue family | Greens |
| Lightness | light (81%) |
| Chroma | vivid (0.197) |
| Temperature | in between |
| Nearest name | Fresh Green (#69D84F) |
| Black text | 12.41:1 |
| White text | 1.69:1 |
Values
| HEX | #66E065 |
| RGB | rgb(102, 224, 101) |
| HSL | hsl(120, 66%, 64%) |
| OKLCH | oklch(81% 0.197 143.4) |
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 #66E065 | 1.69:1 | Fails | Lc -33.5 | Non-text elements, placeholder text |
| Black text on #66E065 | 12.41:1 | AAA | Lc 74.1 | Content text, not long reading |
| #66E065 text on white | 1.69:1 | Fails | Lc 29.8 | Dividers and decoration only |
| #66E065 text on black | 12.41:1 | AAA | Lc -73.1 | Content text, not long reading |
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 300.
-
Step 50
50
#ECFAEA
oklch(97% 0.026 141.8)
-
Step 100
100
#D4F4D2
oklch(93.5% 0.056 143.5)
-
Step 200
200
#AEECAA
oklch(88.4% 0.109 143.1)
-
Step 300
300 (this color)
#66E065
oklch(81% 0.197 143.4)
-
Step 400
400
#00C21D
oklch(70.6% 0.234 143.3)
-
Step 500
500
#00A718
oklch(63.2% 0.209 143.4)
-
Step 600
600
#008C12
oklch(55.5% 0.184 143.3)
-
Step 700
700
#00760E
oklch(49.1% 0.162 143.4)
-
Step 800
800
#006109
oklch(42.7% 0.141 143.3)
-
Step 900
900
#005106
oklch(37.7% 0.125 143.3)
-
Step 950
950
#003102
oklch(27.2% 0.09 143.2)
#66E065 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) | #E4CE59 | 0.144 |
| Deuteranopia (no green cones) | #D4C36E | 0.143 |
| Tritanopia (no blue cones) | #53DAC5 | 0.125 |
| Achromatopsia (no color) | #C7C7C7 | 0.198 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66E065
#66E065
oklch(81% 0.197 143.4)
- #F599FF
#F599FF
oklch(81.1% 0.169 323.4)
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 #66E065, closest first.
No curated palette has a color within ΔE 0.04 of #66E065.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Fresh Green #69D84F ΔE 0.025
- Weird Green #3AE57F ΔE 0.030
- Toxic Green #61DE2A ΔE 0.043
- Kiwi Green #8EE53F ΔE 0.046
- Green Apple #5EDC1F ΔE 0.048
- Aqua Green #12E193 ΔE 0.055
- Turquoise Green #04F489 ΔE 0.057
- Apple Green #76CD26 ΔE 0.057
Use #66E065 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.