#66F6EC
Closest named color: Bright Cyan (#41FDFE). oklch(89.3% 0.124 188.8), rgb(102, 246, 236).
Aa
Black text reads best on this color (15.95:1).
About this color
#66F6EC is a light, moderately saturated teal or cyan. In OKLCH its lightness is 89%, its chroma 0.124 and its hue 189°. Its hue sits on the cool side of the wheel. The nearest named color is Bright Cyan (#41FDFE), ΔE 0.028 away. Black text reads best on it, at 15.95:1.
| Hue family | Teals and cyans |
| Lightness | light (89%) |
| Chroma | moderately saturated (0.124) |
| Temperature | cool |
| Nearest name | Bright Cyan (#41FDFE) |
| Black text | 15.95:1 |
| White text | 1.31:1 |
Values
| HEX | #66F6EC |
| RGB | rgb(102, 246, 236) |
| HSL | hsl(176, 89%, 68%) |
| OKLCH | oklch(89.3% 0.124 188.8) |
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 #66F6EC | 1.31:1 | Fails | Lc -17.6 | Dividers and decoration only |
| Black text on #66F6EC | 15.95:1 | AAA | Lc 88.3 | Fine for body text |
| #66F6EC text on white | 1.31:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #66F6EC text on black | 15.95:1 | AAA | Lc -88.4 | 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
#E6FAF8
oklch(97% 0.021 189.6)
-
Step 100
100
#C8F4F0
oklch(93.5% 0.045 189.6)
-
Step 200
200 (this color)
#66F6EC
oklch(89.3% 0.124 188.8)
-
Step 300
300
#00DDD3
oklch(80.9% 0.14 189)
-
Step 400
400
#00B9B0
oklch(70.8% 0.123 188.6)
-
Step 500
500
#009E97
oklch(63.1% 0.109 189.2)
-
Step 600
600
#00857F
oklch(55.6% 0.096 189.2)
-
Step 700
700
#00706A
oklch(49.1% 0.085 188.3)
-
Step 800
800
#005C57
oklch(42.8% 0.074 188.4)
-
Step 900
900
#004C48
oklch(37.6% 0.065 188.7)
-
Step 950
950
#002E2B
oklch(27.1% 0.047 188)
#66F6EC 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) | #E9EAEC | 0.131 |
| Deuteranopia (no green cones) | #D3D9ED | 0.125 |
| Tritanopia (no blue cones) | #00FCF3 | 0.030 |
| Achromatopsia (no color) | #E0E0E0 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66F6EC
#66F6EC
oklch(89.3% 0.124 188.8)
- #FFCCD4
#FFCCD4
oklch(89.2% 0.059 7.8)
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 #66F6EC, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Cyan #41FDFE ΔE 0.028
- Bright Aqua #0BF9EA ΔE 0.031
- Bright Light Blue #26F7FD ΔE 0.031
- Bright Turquoise #0FFEF9 ΔE 0.032
- Cyan #00FFFF ΔE 0.036
- Robin's Egg #6DEDFD ΔE 0.040
- Light Turquoise #7EF4CC ΔE 0.043
- Robin Egg Blue #8AF1FE ΔE 0.043
Use #66F6EC 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.