#66FDCA
Closest named color: Light Aquamarine (#7BFDC7). oklch(89.9% 0.148 167.5), rgb(102, 253, 202).
Aa
Black text reads best on this color (16.46:1).
About this color
#66FDCA is a light, vivid green. In OKLCH its lightness is 90%, its chroma 0.148 and its hue 167°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Aquamarine (#7BFDC7), ΔE 0.014 away. Black text reads best on it, at 16.46:1.
| Hue family | Greens |
| Lightness | light (90%) |
| Chroma | vivid (0.148) |
| Temperature | in between |
| Nearest name | Light Aquamarine (#7BFDC7) |
| Black text | 16.46:1 |
| White text | 1.27:1 |
Values
| HEX | #66FDCA |
| RGB | rgb(102, 253, 202) |
| HSL | hsl(160, 97%, 70%) |
| OKLCH | oklch(89.9% 0.148 167.5) |
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 #66FDCA | 1.27:1 | Fails | Lc -15.4 | Dividers and decoration only |
| Black text on #66FDCA | 16.46:1 | AAA | Lc 90.3 | Preferred for body text |
| #66FDCA text on white | 1.27:1 | Fails | Lc 13.3 | Not readable |
| #66FDCA text on black | 16.46:1 | AAA | Lc -90.6 | Preferred 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
#E6FBF2
oklch(97% 0.025 168.3)
-
Step 100
100
#C7F6E2
oklch(93.5% 0.055 167.4)
-
Step 200
200 (this color)
#66FDCA
oklch(89.9% 0.148 167.5)
-
Step 300
300
#00E2AB
oklch(81% 0.165 167.4)
-
Step 400
400
#00BC8E
oklch(70.6% 0.144 167.5)
-
Step 500
500
#00A27A
oklch(63.2% 0.129 167.5)
-
Step 600
600
#008866
oklch(55.6% 0.113 167.6)
-
Step 700
700
#007255
oklch(49% 0.1 167.6)
-
Step 800
800
#005E45
oklch(42.8% 0.088 167.1)
-
Step 900
900
#004E39
oklch(37.6% 0.077 167.4)
-
Step 950
950
#002F21
oklch(27.1% 0.055 167.3)
#66FDCA 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) | #F7EDC7 | 0.149 |
| Deuteranopia (no green cones) | #E2DDCD | 0.144 |
| Tritanopia (no blue cones) | #00FEEF | 0.053 |
| Achromatopsia (no color) | #E4E4E4 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66FDCA
#66FDCA
oklch(89.9% 0.148 167.5)
- #FFCDE6
#FFCDE6
oklch(89.9% 0.065 346.9)
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 #66FDCA, closest first.
No curated palette has a color within ΔE 0.04 of #66FDCA.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Aquamarine #7BFDC7 ΔE 0.014
- Aquamarine #7FFFD4 ΔE 0.024
- Light Turquoise #7EF4CC ΔE 0.029
- Light Blue Green #7EFBB3 ΔE 0.030
- Bright Teal #01F9C6 ΔE 0.036
- Seafoam #80F9AD ΔE 0.036
- Seafoam Green #7AF9AB ΔE 0.037
- Light Aqua #8CFFDB ΔE 0.039
Use #66FDCA 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.