#66DBCA
Closest named color: Turquoise (#40E0D0). oklch(81.9% 0.109 182.7), rgb(102, 219, 202).
Aa
Black text reads best on this color (12.55:1).
About this color
#66DBCA is a light, moderately saturated teal or cyan. In OKLCH its lightness is 82%, its chroma 0.109 and its hue 183°. Its hue sits on the cool side of the wheel. The nearest named color is Turquoise (#40E0D0), ΔE 0.022 away. Black text reads best on it, at 12.55:1.
| Hue family | Teals and cyans |
| Lightness | light (82%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Turquoise (#40E0D0) |
| Black text | 12.55:1 |
| White text | 1.67:1 |
Values
| HEX | #66DBCA |
| RGB | rgb(102, 219, 202) |
| HSL | hsl(171, 62%, 63%) |
| OKLCH | oklch(81.9% 0.109 182.7) |
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 #66DBCA | 1.67:1 | Fails | Lc -33.0 | Non-text elements, placeholder text |
| Black text on #66DBCA | 12.55:1 | AAA | Lc 74.5 | Content text, not long reading |
| #66DBCA text on white | 1.67:1 | Fails | Lc 29.3 | Dividers and decoration only |
| #66DBCA text on black | 12.55:1 | AAA | Lc -73.6 | 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
#EBF9F6
oklch(97.1% 0.015 181.8)
-
Step 100
100
#D4F1EC
oklch(93.6% 0.031 184.2)
-
Step 200
200
#ADE7DD
oklch(88.6% 0.061 183.1)
-
Step 300
300 (this color)
#66DBCA
oklch(81.9% 0.109 182.7)
-
Step 400
400
#00BAA7
oklch(70.8% 0.127 182.2)
-
Step 500
500
#009F8F
oklch(63.1% 0.113 182.5)
-
Step 600
600
#008678
oklch(55.6% 0.1 182.2)
-
Step 700
700
#007165
oklch(49.2% 0.088 182.2)
-
Step 800
800
#005C53
oklch(42.6% 0.076 183.4)
-
Step 900
900
#004D45
oklch(37.7% 0.067 183.1)
-
Step 950
950
#002E28
oklch(27% 0.049 181.5)
#66DBCA 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) | #D2D0C9 | 0.116 |
| Deuteranopia (no green cones) | #BFC2CC | 0.110 |
| Tritanopia (no blue cones) | #14DFD6 | 0.034 |
| Achromatopsia (no color) | #C8C8C8 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66DBCA
#66DBCA
oklch(81.9% 0.109 182.7)
- #FFA6BD
#FFA6BD
oklch(81.9% 0.108 2.9)
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 #66DBCA, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Turquoise #40E0D0 ΔE 0.022
- Seafoam Blue #78D1B6 ΔE 0.032
- Medium Turquoise #48D1CC ΔE 0.037
- Tiffany Blue #94D2BD ΔE 0.043
- Pale Teal #82CBB2 ΔE 0.047
- Light Teal #90E4C1 ΔE 0.049
- Medium Aquamarine #66CDAA ΔE 0.050
- Aqua Marine #2EE8BB ΔE 0.054
Use #66DBCA 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.