Medium Aquamarine #66CDAA
Medium Aquamarine is a medium-light, moderately saturated green with hex code #66CDAA and RGB rgb(102, 205, 170).
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Black text reads best on this color (10.87:1).
About this color
#66CDAA is a medium-light, moderately saturated green. In OKLCH its lightness is 78%, its chroma 0.110 and its hue 169°. Its hue sits between the warm and cool halves of the wheel. It is the named color Medium Aquamarine. Black text reads best on it, at 10.87:1.
| Hue family | Greens |
| Lightness | medium-light (78%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Medium Aquamarine |
| Black text | 10.87:1 |
| White text | 1.93:1 |
Colors that go with Medium Aquamarine
Matches found by rotating Medium Aquamarine around the OKLCH hue wheel, each labelled with the closest name in our list.
Complementary
The opposite hue (180°).
Analogous
Neighbouring hues, 30° either side.
Triadic
Three hues spaced 120° apart.
Color palettes with Medium Aquamarine
Curated color palettes that contain a color within ΔE 0.06 (OKLab) of Medium Aquamarine, closest first.
Similar named colors
The eight named colors closest to Medium Aquamarine, with their ΔE distance.
- Seafoam Blue #78D1B6 ΔE 0.026
- Pale Teal #82CBB2 ΔE 0.030
- Medium Turquoise #48D1CC ΔE 0.046
- Emerald #06D6A0 ΔE 0.050
- Dark Sea Green #8FBC8F ΔE 0.056
- Tiffany Blue #94D2BD ΔE 0.056
- Turquoise #40E0D0 ΔE 0.061
- Dark Turquoise #00CED1 ΔE 0.062
More about Medium Aquamarine
How to make Medium Aquamarine
A starting recipe from common paint colors, found with a spectral paint model (the color mixer’s paint mode). Real pigments vary, so mix a small test batch and adjust.
- 3 parts white
- 2 parts green
- 1 part blue
Recipe result: #83CB9D, a difference of ΔE 0.027 from Medium Aquamarine. That is very close: most people will not see the difference.
Codes for Medium Aquamarine in every format
| HEX | #66CDAA |
| RGB | rgb(102, 205, 170) |
| HSL | hsl(160, 51%, 60%) |
| OKLCH | oklch(77.7% 0.11 168.8) |
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 #66CDAA | 1.93:1 | Fails | Lc -41.1 | Non-text elements, placeholder text |
| Black text on #66CDAA | 10.87:1 | AAA | Lc 67.1 | Content text, not long reading |
| #66CDAA text on white | 1.93:1 | Fails | Lc 36.8 | Non-text elements, placeholder text |
| #66CDAA text on black | 10.87:1 | AAA | Lc -65.7 | Content text, not long reading |
Shades and tints of Medium Aquamarine
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
#EDF9F4
oklch(97.2% 0.014 169.3)
-
Step 100
100
#D6F1E6
oklch(93.5% 0.032 169.2)
-
Step 200
200
#B2E7D2
oklch(88.5% 0.062 168.7)
-
Step 300
300 (this color)
#66CDAA
oklch(77.7% 0.11 168.8)
-
Step 400
400
#00BC91
oklch(70.7% 0.142 168.9)
-
Step 500
500
#00A17C
oklch(63% 0.126 169.1)
-
Step 600
600
#008868
oklch(55.7% 0.112 168.9)
-
Step 700
700
#007257
oklch(49.1% 0.098 169.1)
-
Step 800
800
#005E47
oklch(42.8% 0.086 168.9)
-
Step 900
900
#004E3A
oklch(37.7% 0.076 168.5)
-
Step 950
950
#002F22
oklch(27.1% 0.054 168.9)
Medium Aquamarine 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) | #C8C1A8 | 0.111 |
| Deuteranopia (no green cones) | #B9B6AC | 0.107 |
| Tritanopia (no blue cones) | #3ECEC3 | 0.039 |
| Achromatopsia (no color) | #BABABA | 0.111 |
Use Medium Aquamarine 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.