#66D985
Closest named color: Aqua Green (#12E193). oklch(79.8% 0.159 150.2), rgb(102, 217, 133).
Aa
Black text reads best on this color (11.82:1).
About this color
#66D985 is a light, vivid green. In OKLCH its lightness is 80%, its chroma 0.159 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Aqua Green (#12E193), ΔE 0.036 away. Black text reads best on it, at 11.82:1.
| Hue family | Greens |
| Lightness | light (80%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Aqua Green (#12E193) |
| Black text | 11.82:1 |
| White text | 1.77:1 |
Values
| HEX | #66D985 |
| RGB | rgb(102, 217, 133) |
| HSL | hsl(136, 60%, 63%) |
| OKLCH | oklch(79.8% 0.159 150.2) |
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 #66D985 | 1.77:1 | Fails | Lc -36.4 | Non-text elements, placeholder text |
| Black text on #66D985 | 11.82:1 | AAA | Lc 71.4 | Content text, not long reading |
| #66D985 text on white | 1.77:1 | Fails | Lc 32.4 | Non-text elements, placeholder text |
| #66D985 text on black | 11.82:1 | AAA | Lc -70.3 | Content text, not long reading |
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
#ECFAEE
oklch(97.1% 0.022 149.7)
-
Step 100
100
#D5F3DA
oklch(93.6% 0.046 150.1)
-
Step 200
200
#AFEABB
oklch(88.4% 0.088 150.5)
-
Step 300
300 (this color)
#66D985
oklch(79.8% 0.159 150.2)
-
Step 400
400
#00C05A
oklch(70.6% 0.193 150.2)
-
Step 500
500
#00A54C
oklch(63.1% 0.173 150.1)
-
Step 600
600
#008B3F
oklch(55.7% 0.153 150.2)
-
Step 700
700
#007534
oklch(49.2% 0.135 150.2)
-
Step 800
800
#006029
oklch(42.7% 0.118 150)
-
Step 900
900
#005021
oklch(37.7% 0.104 150)
-
Step 950
950
#003011
oklch(27% 0.074 150)
#66D985 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) | #DAC97F | 0.132 |
| Deuteranopia (no green cones) | #CABE8A | 0.130 |
| Tritanopia (no blue cones) | #4CD6C4 | 0.087 |
| Achromatopsia (no color) | #C2C2C2 | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66D985
#66D985
oklch(79.8% 0.159 150.2)
- #F595ED
#F595ED
oklch(79.7% 0.158 330)
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 #66D985, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Aqua Green #12E193 ΔE 0.036
- Weird Green #3AE57F ΔE 0.042
- Seaweed #18D17B ΔE 0.049
- Emerald #06D6A0 ΔE 0.050
- Fresh Green #69D84F ΔE 0.055
- Soft Green #6FC276 ΔE 0.061
- Aqua Marine #2EE8BB ΔE 0.067
- Medium Aquamarine #66CDAA ΔE 0.068
Use #66D985 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.