#66CA8D
Closest named color: Soft Green (#6FC276). oklch(76.2% 0.13 155), rgb(102, 202, 141).
Aa
Black text reads best on this color (10.39:1).
About this color
#66CA8D is a medium-light, moderately saturated green. In OKLCH its lightness is 76%, its chroma 0.130 and its hue 155°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.030 away. Black text reads best on it, at 10.39:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.39:1 |
| White text | 2.01:1 |
Values
| HEX | #66CA8D |
| RGB | rgb(102, 202, 141) |
| HSL | hsl(143, 49%, 60%) |
| OKLCH | oklch(76.2% 0.13 155) |
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 #66CA8D | 2.01:1 | Fails | Lc -43.5 | Non-text elements, placeholder text |
| Black text on #66CA8D | 10.39:1 | AAA | Lc 64.9 | Content text, not long reading |
| #66CA8D text on white | 2.01:1 | Fails | Lc 39.0 | Non-text elements, placeholder text |
| #66CA8D text on black | 10.39:1 | AAA | Lc -63.4 | 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
#EDF9F0
oklch(97.1% 0.017 153.6)
-
Step 100
100
#D7F2DF
oklch(93.6% 0.038 154.9)
-
Step 200
200
#B4E8C5
oklch(88.5% 0.072 155.2)
-
Step 300
300 (this color)
#66CA8D
oklch(76.2% 0.13 155)
-
Step 400
400
#00BF6E
oklch(70.7% 0.175 155)
-
Step 500
500
#00A45D
oklch(63.1% 0.157 154.8)
-
Step 600
600
#008A4E
oklch(55.6% 0.137 155)
-
Step 700
700
#007440
oklch(49.1% 0.122 154.8)
-
Step 800
800
#005F34
oklch(42.6% 0.105 155.1)
-
Step 900
900
#004F2A
oklch(37.6% 0.093 154.9)
-
Step 950
950
#003017
oklch(27.1% 0.068 154.6)
#66CA8D 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) | #C9BD89 | 0.115 |
| Deuteranopia (no green cones) | #BBB291 | 0.114 |
| Tritanopia (no blue cones) | #4DC8BA | 0.064 |
| Achromatopsia (no color) | #B6B6B6 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CA8D
#66CA8D
oklch(76.2% 0.13 155)
- #E491D3
#E491D3
oklch(76.2% 0.13 334.6)
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 #66CA8D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.030
- Medium Aquamarine #66CDAA ΔE 0.038
- Greenblue #23C48B ΔE 0.044
- Emerald #06D6A0 ΔE 0.044
- Dark Mint #48C072 ΔE 0.049
- Seaweed #18D17B ΔE 0.053
- Dark Sea Green #8FBC8F ΔE 0.054
- Green Blue #01C08D ΔE 0.056
Use #66CA8D 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.