#66F1B8
Closest named color: Bright Teal (#01F9C6). oklch(86.7% 0.147 163.4), rgb(102, 241, 184).
Aa
Black text reads best on this color (14.83:1).
About this color
#66F1B8 is a light, vivid green. In OKLCH its lightness is 87%, its chroma 0.147 and its hue 163°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Bright Teal (#01F9C6), ΔE 0.033 away. Black text reads best on it, at 14.83:1.
| Hue family | Greens |
| Lightness | light (87%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Bright Teal (#01F9C6) |
| Black text | 14.83:1 |
| White text | 1.41:1 |
Values
| HEX | #66F1B8 |
| RGB | rgb(102, 241, 184) |
| HSL | hsl(155, 83%, 67%) |
| OKLCH | oklch(86.7% 0.147 163.4) |
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 #66F1B8 | 1.41:1 | Fails | Lc -22.5 | Dividers and decoration only |
| Black text on #66F1B8 | 14.83:1 | AAA | Lc 84.0 | Fine for body text |
| #66F1B8 text on white | 1.41:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #66F1B8 text on black | 14.83:1 | AAA | Lc -83.7 | 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
#CAF6E0
oklch(93.6% 0.054 163.5)
-
Step 200
200 (this color)
#66F1B8
oklch(86.7% 0.147 163.4)
-
Step 300
300
#00E2A1
oklch(80.8% 0.173 163.7)
-
Step 400
400
#00BD85
oklch(70.6% 0.152 163.2)
-
Step 500
500
#00A272
oklch(63% 0.135 163.5)
-
Step 600
600
#00885F
oklch(55.5% 0.119 163.5)
-
Step 700
700
#00734F
oklch(49.1% 0.106 163)
-
Step 800
800
#005E41
oklch(42.7% 0.091 163.9)
-
Step 900
900
#004F35
oklch(37.8% 0.082 162.9)
-
Step 950
950
#002F1E
oklch(27% 0.058 163)
#66F1B8 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) | #EDE1B5 | 0.143 |
| Deuteranopia (no green cones) | #D9D3BC | 0.138 |
| Tritanopia (no blue cones) | #1FF1E1 | 0.058 |
| Achromatopsia (no color) | #D9D9D9 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66F1B8
#66F1B8
oklch(86.7% 0.147 163.4)
- #FFBBE3
#FFBBE3
oklch(86.6% 0.093 343.1)
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 #66F1B8, closest first.
No curated palette has a color within ΔE 0.04 of #66F1B8.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Bright Teal #01F9C6 ΔE 0.033
- Light Turquoise #7EF4CC ΔE 0.034
- Seafoam Green #7AF9AB ΔE 0.035
- Seafoam #80F9AD ΔE 0.036
- Light Blue Green #7EFBB3 ΔE 0.036
- Light Aquamarine #7BFDC7 ΔE 0.040
- Aqua Marine #2EE8BB ΔE 0.040
- Greenish Cyan #2AFEB7 ΔE 0.041
Use #66F1B8 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.