#66F7DD
Closest named color: Light Turquoise (#7EF4CC). oklch(89% 0.13 179.3), rgb(102, 247, 221).
Aa
Black text reads best on this color (15.91:1).
About this color
#66F7DD is a light, moderately saturated teal or cyan. In OKLCH its lightness is 89%, its chroma 0.130 and its hue 179°. 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 15.91:1.
| Hue family | Teals and cyans |
| Lightness | light (89%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Light Turquoise (#7EF4CC) |
| Black text | 15.91:1 |
| White text | 1.31:1 |
Values
| HEX | #66F7DD |
| RGB | rgb(102, 247, 221) |
| HSL | hsl(169, 90%, 68%) |
| OKLCH | oklch(89% 0.13 179.3) |
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 #66F7DD | 1.31:1 | Fails | Lc -17.8 | Dividers and decoration only |
| Black text on #66F7DD | 15.91:1 | AAA | Lc 88.2 | Fine for body text |
| #66F7DD text on white | 1.31:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #66F7DD text on black | 15.91:1 | AAA | Lc -88.3 | 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
#E6FBF6
oklch(97.1% 0.023 180)
-
Step 100
100
#C8F5EB
oklch(93.6% 0.048 180.2)
-
Step 200
200 (this color)
#66F7DD
oklch(89% 0.13 179.3)
-
Step 300
300
#00DFC3
oklch(80.9% 0.148 179.3)
-
Step 400
400
#00BAA3
oklch(70.7% 0.128 179.7)
-
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)
#66F7DD 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) | #EEE9DC | 0.139 |
| Deuteranopia (no green cones) | #D8D9DF | 0.132 |
| Tritanopia (no blue cones) | #00FBEF | 0.033 |
| Achromatopsia (no color) | #E0E0E0 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66F7DD
#66F7DD
oklch(89% 0.13 179.3)
- #FFCADA
#FFCADA
oklch(89% 0.063 358.5)
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 #66F7DD, closest first.
No curated palette has a color within ΔE 0.04 of #66F7DD.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Turquoise #7EF4CC ΔE 0.024
- Bright Aqua #0BF9EA ΔE 0.031
- Aquamarine #7FFFD4 ΔE 0.034
- Light Aqua #8CFFDB ΔE 0.038
- Light Aquamarine #7BFDC7 ΔE 0.040
- Bright Turquoise #0FFEF9 ΔE 0.041
- Bright Cyan #41FDFE ΔE 0.043
- Cyan #00FFFF ΔE 0.048
Use #66F7DD 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.