#66CD65
Closest named color: Apple (#6ECB3C). oklch(76.3% 0.172 143.5), rgb(102, 205, 101).
Aa
Black text reads best on this color (10.48:1).
About this color
#66CD65 is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.172 and its hue 143°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Apple (#6ECB3C), ΔE 0.034 away. Black text reads best on it, at 10.48:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.172) |
| Temperature | in between |
| Nearest name | Apple (#6ECB3C) |
| Black text | 10.48:1 |
| White text | 2.00:1 |
Values
| HEX | #66CD65 |
| RGB | rgb(102, 205, 101) |
| HSL | hsl(119, 51%, 60%) |
| OKLCH | oklch(76.3% 0.172 143.5) |
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 #66CD65 | 2.00:1 | Fails | Lc -43.0 | Non-text elements, placeholder text |
| Black text on #66CD65 | 10.48:1 | AAA | Lc 65.4 | Content text, not long reading |
| #66CD65 text on white | 2.00:1 | Fails | Lc 38.5 | Non-text elements, placeholder text |
| #66CD65 text on black | 10.48:1 | AAA | Lc -63.8 | 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
#EDFAEC
oklch(97.2% 0.023 143.4)
-
Step 100
100
#D7F3D5
oklch(93.6% 0.05 143.4)
-
Step 200
200
#B4EAB1
oklch(88.5% 0.095 143.4)
-
Step 300
300 (this color)
#66CD65
oklch(76.3% 0.172 143.5)
-
Step 400
400
#00C220
oklch(70.6% 0.233 143.5)
-
Step 500
500
#00A71A
oklch(63.2% 0.208 143.5)
-
Step 600
600
#008C14
oklch(55.5% 0.183 143.5)
-
Step 700
700
#00760F
oklch(49.1% 0.162 143.5)
-
Step 800
800
#00610B
oklch(42.7% 0.141 143.5)
-
Step 900
900
#005107
oklch(37.7% 0.124 143.4)
-
Step 950
950
#003103
oklch(27.2% 0.089 143.6)
#66CD65 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) | #D1BD5C | 0.127 |
| Deuteranopia (no green cones) | #C3B46C | 0.126 |
| Tritanopia (no blue cones) | #58C8B5 | 0.108 |
| Achromatopsia (no color) | #B7B7B7 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CD65
#66CD65
oklch(76.3% 0.172 143.5)
- #E689F0
#E689F0
oklch(76.4% 0.172 323.5)
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 #66CD65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Apple #6ECB3C ΔE 0.034
- Seaweed #18D17B ΔE 0.038
- Fresh Green #69D84F ΔE 0.042
- Soft Green #6FC276 ΔE 0.043
- Apple Green #76CD26 ΔE 0.047
- Dark Mint #48C072 ΔE 0.050
- Algae Green #21C36F ΔE 0.053
- Turtle Green #75B84F ΔE 0.056
Use #66CD65 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.