#66EDBC
Closest named color: Aqua Marine (#2EE8BB). oklch(85.8% 0.138 166.3), rgb(102, 237, 188).
Aa
Black text reads best on this color (14.40:1).
About this color
#66EDBC is a light, moderately saturated green. In OKLCH its lightness is 86%, its chroma 0.138 and its hue 166°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.032 away. Black text reads best on it, at 14.40:1.
| Hue family | Greens |
| Lightness | light (86%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 14.40:1 |
| White text | 1.45:1 |
Values
| HEX | #66EDBC |
| RGB | rgb(102, 237, 188) |
| HSL | hsl(158, 79%, 66%) |
| OKLCH | oklch(85.8% 0.138 166.3) |
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 #66EDBC | 1.45:1 | Fails | Lc -24.4 | Dividers and decoration only |
| Black text on #66EDBC | 14.40:1 | AAA | Lc 82.2 | Fine for body text |
| #66EDBC text on white | 1.45:1 | Fails | Lc 21.5 | Dividers and decoration only |
| #66EDBC text on black | 14.40:1 | AAA | Lc -81.8 | 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
#E7FBF2
oklch(97.1% 0.024 167.1)
-
Step 100
100
#CAF5E2
oklch(93.5% 0.051 166.6)
-
Step 200
200 (this color)
#66EDBC
oklch(85.8% 0.138 166.3)
-
Step 300
300
#00E2A8
oklch(81% 0.168 166.2)
-
Step 400
400
#00BD8C
oklch(70.8% 0.147 166.2)
-
Step 500
500
#00A278
oklch(63.2% 0.13 166.5)
-
Step 600
600
#008864
oklch(55.6% 0.115 166.4)
-
Step 700
700
#007254
oklch(49% 0.101 166.9)
-
Step 800
800
#005E44
oklch(42.7% 0.088 166.3)
-
Step 900
900
#004E38
oklch(37.6% 0.078 166.4)
-
Step 950
950
#002F20
oklch(27.1% 0.056 165.8)
#66EDBC 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) | #E8DEB9 | 0.138 |
| Deuteranopia (no green cones) | #D5D0BF | 0.133 |
| Tritanopia (no blue cones) | #1CEEDF | 0.051 |
| Achromatopsia (no color) | #D6D6D6 | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66EDBC
#66EDBC
oklch(85.8% 0.138 166.3)
- #FFB7DD
#FFB7DD
oklch(85.7% 0.096 346.4)
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 #66EDBC, closest first.
No curated palette has a color within ΔE 0.04 of #66EDBC.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.032
- Light Turquoise #7EF4CC ΔE 0.034
- Bright Teal #01F9C6 ΔE 0.039
- Light Teal #90E4C1 ΔE 0.042
- Hospital Green #9BE5AA ΔE 0.045
- Light Aquamarine #7BFDC7 ΔE 0.048
- Seafoam Green #7AF9AB ΔE 0.048
- Seafoam #80F9AD ΔE 0.048
Use #66EDBC 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.