#66E2A5
Closest named color: Aqua Marine (#2EE8BB). oklch(82.6% 0.142 159.5), rgb(102, 226, 165).
Aa
Black text reads best on this color (12.98:1).
About this color
#66E2A5 is a light, vivid green. In OKLCH its lightness is 83%, its chroma 0.142 and its hue 159°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.033 away. Black text reads best on it, at 12.98:1.
| Hue family | Greens |
| Lightness | light (83%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 12.98:1 |
| White text | 1.61:1 |
Values
| HEX | #66E2A5 |
| RGB | rgb(102, 226, 165) |
| HSL | hsl(150, 68%, 64%) |
| OKLCH | oklch(82.6% 0.142 159.5) |
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 #66E2A5 | 1.61:1 | Fails | Lc -30.9 | Non-text elements, placeholder text |
| Black text on #66E2A5 | 12.98:1 | AAA | Lc 76.4 | Fine for body text |
| #66E2A5 text on white | 1.61:1 | Fails | Lc 27.4 | Dividers and decoration only |
| #66E2A5 text on black | 12.98:1 | AAA | Lc -75.6 | Fine for body text |
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
#EBFAF1
oklch(97.2% 0.02 159.8)
-
Step 100
100
#D4F3E0
oklch(93.7% 0.041 158.6)
-
Step 200
200
#ACEAC7
oklch(88.6% 0.079 159.5)
-
Step 300
300 (this color)
#66E2A5
oklch(82.6% 0.142 159.5)
-
Step 400
400
#00BE7C
oklch(70.7% 0.161 159.6)
-
Step 500
500
#00A369
oklch(63.1% 0.144 159.3)
-
Step 600
600
#008958
oklch(55.6% 0.127 159.5)
-
Step 700
700
#007349
oklch(49% 0.112 159.4)
-
Step 800
800
#005F3B
oklch(42.8% 0.098 159.1)
-
Step 900
900
#004F31
oklch(37.7% 0.086 159.7)
-
Step 950
950
#002F1B
oklch(26.9% 0.062 159.3)
#66E2A5 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) | #E0D3A1 | 0.134 |
| Deuteranopia (no green cones) | #CEC6A9 | 0.130 |
| Tritanopia (no blue cones) | #39E1D1 | 0.062 |
| Achromatopsia (no color) | #CBCBCB | 0.143 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66E2A5
#66E2A5
oklch(82.6% 0.142 159.5)
- #FFA3E2
#FFA3E2
oklch(82.6% 0.133 339.4)
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 #66E2A5, closest first.
No curated palette has a color within ΔE 0.04 of #66E2A5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.033
- Aqua Green #12E193 ΔE 0.046
- Hospital Green #9BE5AA ΔE 0.050
- Emerald #06D6A0 ΔE 0.055
- Light Teal #90E4C1 ΔE 0.056
- Light Green #90EE90 ΔE 0.059
- Weird Green #3AE57F ΔE 0.060
- Seafoam Blue #78D1B6 ΔE 0.061
Use #66E2A5 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.