#66EDDC
Closest named color: Light Turquoise (#7EF4CC). oklch(86.7% 0.121 184), rgb(102, 237, 220).
Aa
Black text reads best on this color (14.71:1).
About this color
#66EDDC is a light, moderately saturated teal or cyan. In OKLCH its lightness is 87%, its chroma 0.121 and its hue 184°. Its hue sits on the cool side of the wheel. The nearest named color is Light Turquoise (#7EF4CC), ΔE 0.038 away. Black text reads best on it, at 14.71:1.
| Hue family | Teals and cyans |
| Lightness | light (87%) |
| Chroma | moderately saturated (0.121) |
| Temperature | cool |
| Nearest name | Light Turquoise (#7EF4CC) |
| Black text | 14.71:1 |
| White text | 1.42:1 |
Values
| HEX | #66EDDC |
| RGB | rgb(102, 237, 220) |
| HSL | hsl(172, 79%, 66%) |
| OKLCH | oklch(86.7% 0.121 184) |
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 #66EDDC | 1.42:1 | Fails | Lc -23.1 | Dividers and decoration only |
| Black text on #66EDDC | 14.71:1 | AAA | Lc 83.5 | Fine for body text |
| #66EDDC text on white | 1.42:1 | Fails | Lc 20.2 | Dividers and decoration only |
| #66EDDC text on black | 14.71:1 | AAA | Lc -83.2 | 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
#E7FAF7
oklch(97% 0.02 185.5)
-
Step 100
100
#CAF4ED
oklch(93.6% 0.044 184.2)
-
Step 200
200 (this color)
#66EDDC
oklch(86.7% 0.121 184)
-
Step 300
300
#00DECB
oklch(80.9% 0.143 184)
-
Step 400
400
#00B9A9
oklch(70.6% 0.125 184)
-
Step 500
500
#009F91
oklch(63.1% 0.112 184)
-
Step 600
600
#00867A
oklch(55.7% 0.099 183.9)
-
Step 700
700
#007066
oklch(49% 0.087 184.2)
-
Step 800
800
#005C54
oklch(42.7% 0.075 184.7)
-
Step 900
900
#004D46
oklch(37.8% 0.067 184.5)
-
Step 950
950
#002E29
oklch(27.1% 0.048 183.6)
#66EDDC 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) | #E3E1DB | 0.129 |
| Deuteranopia (no green cones) | #CED1DE | 0.123 |
| Tritanopia (no blue cones) | #00F1E8 | 0.032 |
| Achromatopsia (no color) | #D8D8D8 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66EDDC
#66EDDC
oklch(86.7% 0.121 184)
- #FFBFCD
#FFBFCD
oklch(86.7% 0.075 4.3)
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 #66EDDC, closest first.
No curated palette has a color within ΔE 0.04 of #66EDDC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Turquoise #7EF4CC ΔE 0.038
- Bright Aqua #0BF9EA ΔE 0.038
- Light Teal #90E4C1 ΔE 0.043
- Turquoise #40E0D0 ΔE 0.046
- Bright Light Blue #26F7FD ΔE 0.047
- Robin's Egg #6DEDFD ΔE 0.048
- Bright Turquoise #0FFEF9 ΔE 0.052
- Bright Cyan #41FDFE ΔE 0.052
Use #66EDDC 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.