#66EDC8
Closest named color: Light Turquoise (#7EF4CC). oklch(86.1% 0.13 172.3), rgb(102, 237, 200).
Aa
Black text reads best on this color (14.51:1).
About this color
#66EDC8 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 86%, its chroma 0.130 and its hue 172°. Its hue sits on the cool side of the wheel. The nearest named color is Light Turquoise (#7EF4CC), ΔE 0.028 away. Black text reads best on it, at 14.51:1.
| Hue family | Teals and cyans |
| Lightness | light (86%) |
| Chroma | moderately saturated (0.130) |
| Temperature | cool |
| Nearest name | Light Turquoise (#7EF4CC) |
| Black text | 14.51:1 |
| White text | 1.44:1 |
Values
| HEX | #66EDC8 |
| RGB | rgb(102, 237, 200) |
| HSL | hsl(164, 79%, 66%) |
| OKLCH | oklch(86.1% 0.13 172.3) |
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 #66EDC8 | 1.44:1 | Fails | Lc -24.0 | Dividers and decoration only |
| Black text on #66EDC8 | 14.51:1 | AAA | Lc 82.7 | Fine for body text |
| #66EDC8 text on white | 1.44:1 | Fails | Lc 21.0 | Dividers and decoration only |
| #66EDC8 text on black | 14.51:1 | AAA | Lc -82.3 | 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
#E7FBF4
oklch(97.1% 0.023 172.9)
-
Step 100
100
#CAF5E6
oklch(93.6% 0.049 172)
-
Step 200
200 (this color)
#66EDC8
oklch(86.1% 0.13 172.3)
-
Step 300
300
#00E0B6
oklch(80.8% 0.156 172.7)
-
Step 400
400
#00BB97
oklch(70.6% 0.136 172.4)
-
Step 500
500
#00A181
oklch(63.2% 0.122 172)
-
Step 600
600
#00876C
oklch(55.5% 0.108 172.1)
-
Step 700
700
#00725B
oklch(49.2% 0.095 172.3)
-
Step 800
800
#005D4A
oklch(42.6% 0.082 172.5)
-
Step 900
900
#004E3D
oklch(37.8% 0.073 171.8)
-
Step 950
950
#002E24
oklch(26.9% 0.051 173.7)
#66EDC8 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) | #E6DFC6 | 0.134 |
| Deuteranopia (no green cones) | #D2D0CB | 0.130 |
| Tritanopia (no blue cones) | #00EFE2 | 0.042 |
| Achromatopsia (no color) | #D6D6D6 | 0.131 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66EDC8
#66EDC8
oklch(86.1% 0.13 172.3)
- #FFBAD7
#FFBAD7
oklch(86.1% 0.087 352.1)
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 #66EDC8, closest first.
No curated palette has a color within ΔE 0.04 of #66EDC8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Turquoise #7EF4CC ΔE 0.028
- Light Teal #90E4C1 ΔE 0.037
- Aqua Marine #2EE8BB ΔE 0.037
- Bright Teal #01F9C6 ΔE 0.043
- Turquoise #40E0D0 ΔE 0.048
- Bright Aqua #0BF9EA ΔE 0.049
- Light Aquamarine #7BFDC7 ΔE 0.049
- Hospital Green #9BE5AA ΔE 0.051
Use #66EDC8 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.