#66E7B5
Closest named color: Aqua Marine (#2EE8BB). oklch(84.2% 0.136 165), rgb(102, 231, 181).
Aa
Black text reads best on this color (13.66:1).
About this color
#66E7B5 is a light, moderately saturated green. In OKLCH its lightness is 84%, its chroma 0.136 and its hue 165°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Marine (#2EE8BB), ΔE 0.026 away. Black text reads best on it, at 13.66:1.
| Hue family | Greens |
| Lightness | light (84%) |
| Chroma | moderately saturated (0.136) |
| Temperature | in between |
| Nearest name | Aqua Marine (#2EE8BB) |
| Black text | 13.66:1 |
| White text | 1.53:1 |
Values
| HEX | #66E7B5 |
| RGB | rgb(102, 231, 181) |
| HSL | hsl(157, 73%, 65%) |
| OKLCH | oklch(84.2% 0.136 165) |
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 #66E7B5 | 1.53:1 | Fails | Lc -27.8 | Dividers and decoration only |
| Black text on #66E7B5 | 13.66:1 | AAA | Lc 79.2 | Fine for body text |
| #66E7B5 text on white | 1.53:1 | Fails | Lc 24.5 | Dividers and decoration only |
| #66E7B5 text on black | 13.66:1 | AAA | Lc -78.6 | 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 300.
-
Step 50
50
#EBFAF2
oklch(97.2% 0.019 162.9)
-
Step 100
100
#D3F3E3
oklch(93.7% 0.04 164)
-
Step 200
200
#AAEACD
oklch(88.6% 0.076 165)
-
Step 300
300 (this color)
#66E7B5
oklch(84.2% 0.136 165)
-
Step 400
400
#00BD89
oklch(70.7% 0.149 164.9)
-
Step 500
500
#00A275
oklch(63.1% 0.133 165)
-
Step 600
600
#008862
oklch(55.5% 0.117 165.2)
-
Step 700
700
#007352
oklch(49.2% 0.104 164.9)
-
Step 800
800
#005E42
oklch(42.7% 0.09 164.7)
-
Step 900
900
#004E37
oklch(37.6% 0.079 165.5)
-
Step 950
950
#002F1F
oklch(27% 0.057 164.4)
#66E7B5 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) | #E3D8B2 | 0.135 |
| Deuteranopia (no green cones) | #D0CBB8 | 0.129 |
| Tritanopia (no blue cones) | #2AE7D9 | 0.053 |
| Achromatopsia (no color) | #D0D0D0 | 0.137 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66E7B5
#66E7B5
oklch(84.2% 0.136 165)
- #FFAEDC
#FFAEDC
oklch(84.2% 0.11 344.7)
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 #66E7B5, closest first.
No curated palette has a color within ΔE 0.04 of #66E7B5.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Marine #2EE8BB ΔE 0.026
- Light Teal #90E4C1 ΔE 0.042
- Hospital Green #9BE5AA ΔE 0.044
- Light Turquoise #7EF4CC ΔE 0.048
- Bright Teal #01F9C6 ΔE 0.050
- Turquoise #40E0D0 ΔE 0.051
- Seafoam Green #7AF9AB ΔE 0.059
- Seafoam #80F9AD ΔE 0.060
Use #66E7B5 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.