#66DEB2
Closest named color: Aqua Marine (#2EE8BB). oklch(82% 0.126 166.6), rgb(102, 222, 178).
Aa
Black text reads best on this color (12.65:1).
About this color
#66DEB2 is a light, moderately saturated green. In OKLCH its lightness is 82%, its chroma 0.126 and its hue 167°. 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 12.65:1.
| Hue family | Greens |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.126) |
| Temperature | in between |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 12.65:1 |
| White text | 1.65:1 |
Values
| HEX | #66DEB2 |
| RGB | rgb(102, 222, 178) |
| HSL | hsl(158, 65%, 64%) |
| OKLCH | oklch(82% 0.126 166.6) |
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 #66DEB2 | 1.65:1 | Fails | Lc -32.5 | Non-text elements, placeholder text |
| Black text on #66DEB2 | 12.65:1 | AAA | Lc 75.0 | Content text, not long reading |
| #66DEB2 text on white | 1.65:1 | Fails | Lc 28.8 | Dividers and decoration only |
| #66DEB2 text on black | 12.65:1 | AAA | Lc -74.1 | 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
#EBF9F3
oklch(97% 0.017 168.5)
-
Step 100
100
#D4F2E4
oklch(93.6% 0.037 165.8)
-
Step 200
200
#ADE9CF
oklch(88.6% 0.071 166.3)
-
Step 300
300 (this color)
#66DEB2
oklch(82% 0.126 166.6)
-
Step 400
400
#00BD8C
oklch(70.8% 0.147 166.2)
-
Step 500
500
#00A278
oklch(63.2% 0.13 166.5)
-
Step 600
600
#008864
oklch(55.6% 0.115 166.4)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E44
oklch(42.7% 0.088 166.3)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#66DEB2 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) | #DAD0B0 | 0.127 |
| Deuteranopia (no green cones) | #C8C4B5 | 0.122 |
| Tritanopia (no blue cones) | #31DFD1 | 0.046 |
| Achromatopsia (no color) | #C9C9C9 | 0.127 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66DEB2
#66DEB2
oklch(82% 0.126 166.6)
- #FFA2D4
#FFA2D4
oklch(82% 0.125 346.8)
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 #66DEB2, closest first.
No curated palette has a color within ΔE 0.04 of #66DEB2.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.033
- Seafoam Blue #78D1B6 ΔE 0.040
- Turquoise #40E0D0 ΔE 0.042
- Medium Aquamarine #66CDAA ΔE 0.046
- Light Teal #90E4C1 ΔE 0.047
- Emerald #06D6A0 ΔE 0.054
- Hospital Green #9BE5AA ΔE 0.054
- Pale Teal #82CBB2 ΔE 0.056
Use #66DEB2 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.