#66D2F3
Closest named color: Sky Blue (#87CEEB). oklch(81.2% 0.109 220.7), rgb(102, 210, 243).
Aa
Black text reads best on this color (12.07:1).
About this color
#66D2F3 is a light, moderately saturated teal or cyan. In OKLCH its lightness is 81%, its chroma 0.109 and its hue 221°. Its hue sits on the cool side of the wheel. The nearest named color is Sky Blue (#87CEEB), ΔE 0.029 away. Black text reads best on it, at 12.07:1.
| Hue family | Teals and cyans |
| Lightness | light (81%) |
| Chroma | moderately saturated (0.109) |
| Temperature | cool |
| Nearest name | Sky Blue (#87CEEB) |
| Black text | 12.07:1 |
| White text | 1.73:1 |
Values
| HEX | #66D2F3 |
| RGB | rgb(102, 210, 243) |
| HSL | hsl(194, 85%, 68%) |
| OKLCH | oklch(81.2% 0.109 220.7) |
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 #66D2F3 | 1.73:1 | Fails | Lc -35.2 | Non-text elements, placeholder text |
| Black text on #66D2F3 | 12.07:1 | AAA | Lc 72.5 | Content text, not long reading |
| #66D2F3 text on white | 1.73:1 | Fails | Lc 31.3 | Non-text elements, placeholder text |
| #66D2F3 text on black | 12.07:1 | AAA | Lc -71.4 | 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
#EBF8FC
oklch(97.1% 0.015 218)
-
Step 100
100
#D4EFF9
oklch(93.6% 0.031 222.1)
-
Step 200
200
#ADE3F5
oklch(88.5% 0.06 220.3)
-
Step 300
300 (this color)
#66D2F3
oklch(81.2% 0.109 220.7)
-
Step 400
400
#00B2D9
oklch(70.7% 0.13 221)
-
Step 500
500
#0099BA
oklch(63.2% 0.115 220.3)
-
Step 600
600
#00809D
oklch(55.6% 0.102 221.1)
-
Step 700
700
#006C84
oklch(49.2% 0.09 220.2)
-
Step 800
800
#00586D
oklch(42.6% 0.078 221.3)
-
Step 900
900
#004A5B
oklch(37.8% 0.069 219.8)
-
Step 950
950
#002C37
oklch(27.1% 0.049 219.4)
#66D2F3 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) | #BECDF5 | 0.091 |
| Deuteranopia (no green cones) | #A9BEF3 | 0.081 |
| Tritanopia (no blue cones) | #00DDDC | 0.064 |
| Achromatopsia (no color) | #C4C4C4 | 0.109 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66D2F3
#66D2F3
oklch(81.2% 0.109 220.7)
- #FEAA8B
#FEAA8B
oklch(81.3% 0.108 41)
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 #66D2F3, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Sky Blue #87CEEB ΔE 0.029
- Lightblue #7BC8F6 ΔE 0.032
- Vivid Sky Blue #4CC9F0 ΔE 0.033
- Light Sky Blue #87CEFA ΔE 0.033
- Sky #82CAFC ΔE 0.036
- Aqua Blue #02D8E9 ΔE 0.044
- Bright Sky Blue #02CCFE ΔE 0.047
- Light Cornflower Blue #98C1D9 ΔE 0.061
Use #66D2F3 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.