#66E192
Closest named color: Aqua Green (#12E193). oklch(82% 0.158 153), rgb(102, 225, 146).
Aa
Black text reads best on this color (12.75:1).
About this color
#66E192 is a light, vivid green. In OKLCH its lightness is 82%, its chroma 0.158 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.034 away. Black text reads best on it, at 12.75:1.
| Hue family | Greens |
| Lightness | light (82%) |
| Chroma | vivid (0.158) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 12.75:1 |
| White text | 1.64:1 |
Values
| HEX | #66E192 |
| RGB | rgb(102, 225, 146) |
| HSL | hsl(141, 67%, 64%) |
| OKLCH | oklch(82% 0.158 153) |
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 #66E192 | 1.64:1 | Fails | Lc -32.0 | Non-text elements, placeholder text |
| Black text on #66E192 | 12.75:1 | AAA | Lc 75.4 | Fine for body text |
| #66E192 text on white | 1.64:1 | Fails | Lc 28.4 | Dividers and decoration only |
| #66E192 text on black | 12.75:1 | AAA | Lc -74.5 | 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
#EBFAEF
oklch(97.1% 0.021 154.1)
-
Step 100
100
#D4F3DC
oklch(93.6% 0.045 153.3)
-
Step 200
200
#ADEBBE
oklch(88.6% 0.088 152.9)
-
Step 300
300 (this color)
#66E192
oklch(82% 0.158 153)
-
Step 400
400
#00C067
oklch(70.8% 0.182 153.1)
-
Step 500
500
#00A457
oklch(63% 0.162 153)
-
Step 600
600
#008A48
oklch(55.5% 0.143 153)
-
Step 700
700
#00743C
oklch(49% 0.126 153.1)
-
Step 800
800
#005F30
oklch(42.6% 0.109 153.1)
-
Step 900
900
#005027
oklch(37.8% 0.098 152.9)
-
Step 950
950
#003015
oklch(27.1% 0.07 152.9)
#66E192 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) | #E1D18D | 0.137 |
| Deuteranopia (no green cones) | #D0C597 | 0.134 |
| Tritanopia (no blue cones) | #44DECD | 0.082 |
| Achromatopsia (no color) | #CACACA | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66E192
#66E192
oklch(82% 0.158 153)
- #FF9CEF
#FF9CEF
oklch(82% 0.155 333)
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 #66E192, closest first.
No curated palette has a color within ΔE 0.04 of #66E192.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.034
- Weird Green #3AE57F ΔE 0.040
- Aqua Marine #2EE8BB ΔE 0.051
- Light Green #90EE90 ΔE 0.054
- Emerald #06D6A0 ΔE 0.056
- Hospital Green #9BE5AA ΔE 0.062
- Turquoise Green #04F489 ΔE 0.064
- Seaweed #18D17B ΔE 0.067
Use #66E192 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.