#66DFAE
Closest named color: Aqua Marine (#2EE8BB). oklch(82.1% 0.131 164.2), rgb(102, 223, 174).
Aa
Black text reads best on this color (12.73:1).
About this color
#66DFAE is a light, moderately saturated green. In OKLCH its lightness is 82%, its chroma 0.131 and its hue 164°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.032 away. Black text reads best on it, at 12.73:1.
| Hue family | Greens |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.131) |
| Temperature | in between |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 12.73:1 |
| White text | 1.64:1 |
Values
| HEX | #66DFAE |
| RGB | rgb(102, 223, 174) |
| HSL | hsl(156, 65%, 64%) |
| OKLCH | oklch(82.1% 0.131 164.2) |
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 #66DFAE | 1.64:1 | Fails | Lc -32.1 | Non-text elements, placeholder text |
| Black text on #66DFAE | 12.73:1 | AAA | Lc 75.3 | Fine for body text |
| #66DFAE text on white | 1.64:1 | Fails | Lc 28.5 | Dividers and decoration only |
| #66DFAE text on black | 12.73:1 | AAA | Lc -74.4 | 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
#EBF9F2
oklch(97% 0.017 164.7)
-
Step 100
100
#D4F2E3
oklch(93.5% 0.037 164.1)
-
Step 200
200
#ADE9CD
oklch(88.5% 0.072 164.5)
-
Step 300
300 (this color)
#66DFAE
oklch(82.1% 0.131 164.2)
-
Step 400
400
#00BD87
oklch(70.7% 0.15 164.1)
-
Step 500
500
#00A274
oklch(63.1% 0.134 164.5)
-
Step 600
600
#008861
oklch(55.5% 0.117 164.6)
-
Step 700
700
#007351
oklch(49.2% 0.104 164.3)
-
Step 800
800
#005E42
oklch(42.7% 0.09 164.7)
-
Step 900
900
#004F36
oklch(37.9% 0.081 163.8)
-
Step 950
950
#002F1F
oklch(27% 0.057 164.4)
#66DFAE 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) | #DBD1AB | 0.128 |
| Deuteranopia (no green cones) | #CAC4B1 | 0.125 |
| Tritanopia (no blue cones) | #34DFD1 | 0.051 |
| Achromatopsia (no color) | #C9C9C9 | 0.132 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66DFAE
#66DFAE
oklch(82.1% 0.131 164.2)
- #FFA2D9
#FFA2D9
oklch(82.1% 0.128 344)
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 #66DFAE, closest first.
No curated palette has a color within ΔE 0.04 of #66DFAE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.032
- Seafoam Blue #78D1B6 ΔE 0.046
- Turquoise #40E0D0 ΔE 0.047
- Light Teal #90E4C1 ΔE 0.049
- Medium Aquamarine #66CDAA ΔE 0.050
- Hospital Green #9BE5AA ΔE 0.052
- Emerald #06D6A0 ΔE 0.052
- Aqua Green #12E193 ΔE 0.056
Use #66DFAE 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.