#66FEC8
Closest named color: Light Aquamarine (#7BFDC7). oklch(90.1% 0.151 166.3), rgb(102, 254, 200).
Aa
Black text reads best on this color (16.57:1).
About this color
#66FEC8 is a very light, vivid green. In OKLCH its lightness is 90%, its chroma 0.151 and its hue 166°. 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 16.57:1.
| Hue family | Greens |
| Lightness | very light (90%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Light Aquamarine (#7BFDC7) |
| Black text | 16.57:1 |
| White text | 1.26:1 |
Values
| HEX | #66FEC8 |
| RGB | rgb(102, 254, 200) |
| HSL | hsl(159, 99%, 70%) |
| OKLCH | oklch(90.1% 0.151 166.3) |
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 #66FEC8 | 1.26:1 | Fails | Lc -14.9 | Not readable |
| Black text on #66FEC8 | 16.57:1 | AAA | Lc 90.7 | Preferred for body text |
| #66FEC8 text on white | 1.26:1 | Fails | Lc 12.9 | Not readable |
| #66FEC8 text on black | 16.57:1 | AAA | Lc -91.0 | 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
#C7F7E2
oklch(93.7% 0.057 166.7)
-
Step 200
200 (this color)
#66FEC8
oklch(90.1% 0.151 166.3)
-
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)
#66FEC8 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) | #F9EEC5 | 0.151 |
| Deuteranopia (no green cones) | #E3DECC | 0.145 |
| Tritanopia (no blue cones) | #00FFEF | 0.055 |
| Achromatopsia (no color) | #E4E4E4 | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66FEC8
#66FEC8
oklch(90.1% 0.151 166.3)
- #FFCEE7
#FFCEE7
oklch(90.1% 0.064 346.4)
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 #66FEC8, closest first.
No curated palette has a color within ΔE 0.04 of #66FEC8.
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 0.026
- Light Blue Green #7EFBB3 ΔE 0.027
- Light Turquoise #7EF4CC ΔE 0.033
- Seafoam #80F9AD ΔE 0.033
- Seafoam Green #7AF9AB ΔE 0.035
- Bright Teal #01F9C6 ΔE 0.036
- Greenish Cyan #2AFEB7 ΔE 0.037
Use #66FEC8 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.