#66F5DB
Closest named color: Light Turquoise (#7EF4CC). oklch(88.5% 0.129 179.2), rgb(102, 245, 219).
Aa
Black text reads best on this color (15.64:1).
About this color
#66F5DB is a light, moderately saturated teal or cyan. In OKLCH its lightness is 89%, its chroma 0.129 and its hue 179°. Its hue sits on the cool side of the wheel. The nearest named color is Light Turquoise (#7EF4CC), ΔE 0.023 away. Black text reads best on it, at 15.64:1.
| Hue family | Teals and cyans |
| Lightness | light (89%) |
| Chroma | moderately saturated (0.129) |
| Temperature | cool |
| Nearest name | Light Turquoise (#7EF4CC) |
| Black text | 15.64:1 |
| White text | 1.34:1 |
Values
| HEX | #66F5DB |
| RGB | rgb(102, 245, 219) |
| HSL | hsl(169, 88%, 68%) |
| OKLCH | oklch(88.5% 0.129 179.2) |
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 #66F5DB | 1.34:1 | Fails | Lc -18.9 | Dividers and decoration only |
| Black text on #66F5DB | 15.64:1 | AAA | Lc 87.1 | Fine for body text |
| #66F5DB text on white | 1.34:1 | Fails | Lc 16.5 | Dividers and decoration only |
| #66F5DB text on black | 15.64:1 | AAA | Lc -87.1 | 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
#E7FBF6
oklch(97.2% 0.022 179.2)
-
Step 100
100
#C8F5EA
oklch(93.6% 0.049 178.7)
-
Step 200
200 (this color)
#66F5DB
oklch(88.5% 0.129 179.2)
-
Step 300
300
#00DFC3
oklch(80.9% 0.148 179.3)
-
Step 400
400
#00BAA2
oklch(70.6% 0.129 179.1)
-
Step 500
500
#00A08B
oklch(63.2% 0.115 179)
-
Step 600
600
#008675
oklch(55.5% 0.101 179.7)
-
Step 700
700
#007162
oklch(49.1% 0.09 179.3)
-
Step 800
800
#005D50
oklch(42.8% 0.078 178.9)
-
Step 900
900
#004D42
oklch(37.6% 0.069 179)
-
Step 950
950
#002E27
oklch(27% 0.049 179.5)
#66F5DB 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) | #ECE8DA | 0.137 |
| Deuteranopia (no green cones) | #D6D8DD | 0.129 |
| Tritanopia (no blue cones) | #00F9ED | 0.034 |
| Achromatopsia (no color) | #DEDEDE | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66F5DB
#66F5DB
oklch(88.5% 0.129 179.2)
- #FFC8D8
#FFC8D8
oklch(88.6% 0.066 359.3)
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 #66F5DB, closest first.
No curated palette has a color within ΔE 0.04 of #66F5DB.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Turquoise #7EF4CC ΔE 0.023
- Bright Aqua #0BF9EA ΔE 0.031
- Aquamarine #7FFFD4 ΔE 0.038
- Light Aqua #8CFFDB ΔE 0.042
- Light Aquamarine #7BFDC7 ΔE 0.042
- Bright Turquoise #0FFEF9 ΔE 0.044
- Bright Cyan #41FDFE ΔE 0.046
- Bright Light Blue #26F7FD ΔE 0.049
Use #66F5DB 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.