#66EFCE
Closest named color: Light Turquoise (#7EF4CC). oklch(86.7% 0.129 174.7), rgb(102, 239, 206).
Aa
Black text reads best on this color (14.80:1).
About this color
#66EFCE is a light, moderately saturated teal or cyan. In OKLCH its lightness is 87%, its chroma 0.129 and its hue 175°. Its hue sits on the cool side of the wheel. The nearest named color is Light Turquoise (#7EF4CC), ΔE 0.024 away. Black text reads best on it, at 14.80:1.
| Hue family | Teals and cyans |
| Lightness | light (87%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Light Turquoise (#7EF4CC) |
| Black text | 14.80:1 |
| White text | 1.41:1 |
Values
| HEX | #66EFCE |
| RGB | rgb(102, 239, 206) |
| HSL | hsl(166, 81%, 67%) |
| OKLCH | oklch(86.7% 0.129 174.7) |
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 #66EFCE | 1.41:1 | Fails | Lc -22.7 | Dividers and decoration only |
| Black text on #66EFCE | 14.80:1 | AAA | Lc 83.8 | Fine for body text |
| #66EFCE text on white | 1.41:1 | Fails | Lc 19.9 | Dividers and decoration only |
| #66EFCE text on black | 14.80:1 | AAA | Lc -83.6 | 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 200.
-
Step 50
50
#E7FBF4
oklch(97.1% 0.023 172.9)
-
Step 100
100
#CAF5E8
oklch(93.6% 0.048 174.9)
-
Step 200
200 (this color)
#66EFCE
oklch(86.7% 0.129 174.7)
-
Step 300
300
#00E0BA
oklch(80.9% 0.153 174.5)
-
Step 400
400
#00BB9B
oklch(70.7% 0.134 174.5)
-
Step 500
500
#00A085
oklch(63% 0.119 175)
-
Step 600
600
#00876F
oklch(55.6% 0.106 174.3)
-
Step 700
700
#00715D
oklch(49% 0.093 174.7)
-
Step 800
800
#005D4C
oklch(42.7% 0.081 174.6)
-
Step 900
900
#004E3F
oklch(37.8% 0.072 174.1)
-
Step 950
950
#002E25
oklch(26.9% 0.05 175.6)
#66EFCE 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) | #E7E1CD | 0.135 |
| Deuteranopia (no green cones) | #D3D2D0 | 0.129 |
| Tritanopia (no blue cones) | #00F2E5 | 0.039 |
| Achromatopsia (no color) | #D8D8D8 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66EFCE
#66EFCE
oklch(86.7% 0.129 174.7)
- #FFBED6
#FFBED6
oklch(86.7% 0.08 354.9)
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 #66EFCE, closest first.
No curated palette has a color within ΔE 0.04 of #66EFCE.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Turquoise #7EF4CC ΔE 0.024
- Light Teal #90E4C1 ΔE 0.039
- Bright Aqua #0BF9EA ΔE 0.043
- Aqua Marine #2EE8BB ΔE 0.044
- Bright Teal #01F9C6 ΔE 0.044
- Light Aquamarine #7BFDC7 ΔE 0.047
- Aquamarine #7FFFD4 ΔE 0.049
- Turquoise #40E0D0 ΔE 0.051
Use #66EFCE 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.