#66E9CC
Closest named color: Light Teal (#90E4C1). oklch(85.3% 0.123 176.3), rgb(102, 233, 204).
Aa
Black text reads best on this color (14.09:1).
About this color
#66E9CC is a light, moderately saturated teal or cyan. In OKLCH its lightness is 85%, its chroma 0.123 and its hue 176°. Its hue sits on the cool side of the wheel. The nearest named color is Light Teal (#90E4C1), ΔE 0.034 away. Black text reads best on it, at 14.09:1.
| Hue family | Teals and cyans |
| Lightness | light (85%) |
| Chroma | moderately saturated (0.123) |
| Temperature | cool |
| Nearest name | Light Teal (#90E4C1) |
| Black text | 14.09:1 |
| White text | 1.49:1 |
Values
| HEX | #66E9CC |
| RGB | rgb(102, 233, 204) |
| HSL | hsl(167, 75%, 66%) |
| OKLCH | oklch(85.3% 0.123 176.3) |
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 #66E9CC | 1.49:1 | Fails | Lc -25.9 | Dividers and decoration only |
| Black text on #66E9CC | 14.09:1 | AAA | Lc 81.0 | Fine for body text |
| #66E9CC text on white | 1.49:1 | Fails | Lc 22.8 | Dividers and decoration only |
| #66E9CC text on black | 14.09:1 | AAA | Lc -80.5 | 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
#E8FAF5
oklch(97% 0.02 177.5)
-
Step 100
100
#CBF5E9
oklch(93.7% 0.046 176.1)
-
Step 200
200 (this color)
#66E9CC
oklch(85.3% 0.123 176.3)
-
Step 300
300
#00E0BD
oklch(81% 0.152 175.9)
-
Step 400
400
#00BB9E
oklch(70.8% 0.132 176.2)
-
Step 500
500
#00A087
oklch(63.1% 0.118 176.3)
-
Step 600
600
#008771
oklch(55.7% 0.104 175.8)
-
Step 700
700
#00715F
oklch(49% 0.091 176.5)
-
Step 800
800
#005D4E
oklch(42.8% 0.079 176.7)
-
Step 900
900
#004D40
oklch(37.6% 0.07 176.4)
-
Step 950
950
#002E26
oklch(26.9% 0.05 177.5)
#66E9CC 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) | #E1DCCB | 0.129 |
| Deuteranopia (no green cones) | #CDCDCE | 0.124 |
| Tritanopia (no blue cones) | #00ECE0 | 0.037 |
| Achromatopsia (no color) | #D3D3D3 | 0.124 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66E9CC
#66E9CC
oklch(85.3% 0.123 176.3)
- #FFB7D0
#FFB7D0
oklch(85.3% 0.089 356.6)
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 #66E9CC, closest first.
No curated palette has a color within ΔE 0.04 of #66E9CC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Teal #90E4C1 ΔE 0.034
- Turquoise #40E0D0 ΔE 0.037
- Light Turquoise #7EF4CC ΔE 0.038
- Aqua Marine #2EE8BB ΔE 0.039
- Bright Aqua #0BF9EA ΔE 0.051
- Bright Teal #01F9C6 ΔE 0.054
- Hospital Green #9BE5AA ΔE 0.055
- Light Aquamarine #7BFDC7 ΔE 0.062
Use #66E9CC 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.