#66F7BF
Closest named color: Light Aquamarine (#7BFDC7). oklch(88.3% 0.149 164.6), rgb(102, 247, 191).
Aa
Black text reads best on this color (15.62:1).
About this color
#66F7BF is a light, vivid green. In OKLCH its lightness is 88%, its chroma 0.149 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Light Aquamarine (#7BFDC7), ΔE 0.025 away. Black text reads best on it, at 15.62:1.
| Hue family | Greens |
| Lightness | light (88%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Light Aquamarine (#7BFDC7) |
| Black text | 15.62:1 |
| White text | 1.34:1 |
Values
| HEX | #66F7BF |
| RGB | rgb(102, 247, 191) |
| HSL | hsl(157, 90%, 68%) |
| OKLCH | oklch(88.3% 0.149 164.6) |
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 #66F7BF | 1.34:1 | Fails | Lc -19.0 | Dividers and decoration only |
| Black text on #66F7BF | 15.62:1 | AAA | Lc 87.0 | Fine for body text |
| #66F7BF text on white | 1.34:1 | Fails | Lc 16.6 | Dividers and decoration only |
| #66F7BF text on black | 15.62:1 | AAA | Lc -87.0 | 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
#E7FBF1
oklch(97.1% 0.025 164.5)
-
Step 100
100
#C9F6E0
oklch(93.6% 0.055 164.1)
-
Step 200
200 (this color)
#66F7BF
oklch(88.3% 0.149 164.6)
-
Step 300
300
#00E2A4
oklch(80.9% 0.171 164.7)
-
Step 400
400
#00BD88
oklch(70.7% 0.15 164.5)
-
Step 500
500
#00A274
oklch(63.1% 0.134 164.5)
-
Step 600
600
#008861
oklch(55.5% 0.117 164.6)
-
Step 700
700
#007351
oklch(49.2% 0.104 164.3)
-
Step 800
800
#005E42
oklch(42.7% 0.09 164.7)
-
Step 900
900
#004E36
oklch(37.5% 0.079 164.5)
-
Step 950
950
#002F1F
oklch(27% 0.057 164.4)
#66F7BF 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) | #F3E7BC | 0.147 |
| Deuteranopia (no green cones) | #DED8C3 | 0.142 |
| Tritanopia (no blue cones) | #08F7E7 | 0.058 |
| Achromatopsia (no color) | #DEDEDE | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66F7BF
#66F7BF
oklch(88.3% 0.149 164.6)
- #FFC4E5
#FFC4E5
oklch(88.2% 0.079 344.2)
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 #66F7BF, closest first.
No curated palette has a color within ΔE 0.04 of #66F7BF.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Light Aquamarine #7BFDC7 ΔE 0.025
- Light Blue Green #7EFBB3 ΔE 0.027
- Light Turquoise #7EF4CC ΔE 0.029
- Seafoam #80F9AD ΔE 0.029
- Seafoam Green #7AF9AB ΔE 0.029
- Bright Teal #01F9C6 ΔE 0.030
- Greenish Cyan #2AFEB7 ΔE 0.035
- Aquamarine #7FFFD4 ΔE 0.039
Use #66F7BF 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.