#66C7BB
Closest named color: Pale Teal (#82CBB2). oklch(76.7% 0.094 184.9), rgb(102, 199, 187).
Aa
Black text reads best on this color (10.45:1).
About this color
#66C7BB is a medium-light, moderately saturated teal or cyan. In OKLCH its lightness is 77%, its chroma 0.094 and its hue 185°. Its hue sits on the cool side of the wheel. The nearest named color is Pale Teal (#82CBB2), ΔE 0.032 away. Black text reads best on it, at 10.45:1.
| Hue family | Teals and cyans |
| Lightness | medium-light (77%) |
| Chroma | moderately saturated (0.094) |
| Temperature | cool |
| Nearest name | Pale Teal (#82CBB2) |
| Black text | 10.45:1 |
| White text | 2.00:1 |
Values
| HEX | #66C7BB |
| RGB | rgb(102, 199, 187) |
| HSL | hsl(173, 46%, 59%) |
| OKLCH | oklch(76.7% 0.094 184.9) |
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 #66C7BB | 2.00:1 | Fails | Lc -43.2 | Non-text elements, placeholder text |
| Black text on #66C7BB | 10.45:1 | AAA | Lc 65.1 | Content text, not long reading |
| #66C7BB text on white | 2.00:1 | Fails | Lc 38.8 | Non-text elements, placeholder text |
| #66C7BB text on black | 10.45:1 | AAA | Lc -63.6 | Content text, not long reading |
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 300.
-
Step 50
50
#EDF8F6
oklch(97% 0.012 184.1)
-
Step 100
100
#D7F0EC
oklch(93.6% 0.027 185.2)
-
Step 200
200
#B3E5DD
oklch(88.5% 0.053 184.3)
-
Step 300
300 (this color)
#66C7BB
oklch(76.7% 0.094 184.9)
-
Step 400
400
#00B9AB
oklch(70.7% 0.124 185.3)
-
Step 500
500
#009F92
oklch(63.2% 0.111 184.7)
-
Step 600
600
#00867B
oklch(55.7% 0.098 184.8)
-
Step 700
700
#007067
oklch(49% 0.086 185.2)
-
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)
#66C7BB 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) | #BFBEBB | 0.100 |
| Deuteranopia (no green cones) | #AFB2BC | 0.094 |
| Tritanopia (no blue cones) | #34CBC3 | 0.029 |
| Achromatopsia (no color) | #B7B7B7 | 0.095 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66C7BB
#66C7BB
oklch(76.7% 0.094 184.9)
- #E79AAB
#E79AAB
oklch(76.7% 0.094 5.1)
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 #66C7BB, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Pale Teal #82CBB2 ΔE 0.032
- Medium Turquoise #48D1CC ΔE 0.032
- Medium Aquamarine #66CDAA ΔE 0.034
- Seafoam Blue #78D1B6 ΔE 0.036
- Dark Turquoise #00CED1 ΔE 0.044
- Tiffany Blue #94D2BD ΔE 0.057
- Topaz #13BBAF ΔE 0.060
- Dark Sea Green #8FBC8F ΔE 0.063
Use #66C7BB 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.