#66C97F
Closest named color: Soft Green (#6FC276). oklch(75.7% 0.142 150.1), rgb(102, 201, 127).
Aa
Black text reads best on this color (10.22:1).
About this color
#66C97F is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.142 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.019 away. Black text reads best on it, at 10.22:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.142) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.22:1 |
| White text | 2.05:1 |
Values
| HEX | #66C97F |
| RGB | rgb(102, 201, 127) |
| HSL | hsl(135, 48%, 59%) |
| OKLCH | oklch(75.7% 0.142 150.1) |
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 #66C97F | 2.05:1 | Fails | Lc -44.3 | Non-text elements, placeholder text |
| Black text on #66C97F | 10.22:1 | AAA | Lc 64.1 | Content text, not long reading |
| #66C97F text on white | 2.05:1 | Fails | Lc 39.8 | Non-text elements, placeholder text |
| #66C97F text on black | 10.22:1 | AAA | Lc -62.5 | 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 400.
-
Step 50
50
#F0F8F1
oklch(97.1% 0.013 149.3)
-
Step 100
100
#DEEFE1
oklch(93.6% 0.026 150.8)
-
Step 200
200
#C3E3C8
oklch(88.5% 0.05 149.7)
-
Step 300
300
#97D1A3
oklch(80.8% 0.088 150.4)
-
Step 400
400 (this color)
#66C97F
oklch(75.7% 0.142 150.1)
-
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)
#66C97F 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) | #CABB7A | 0.118 |
| Deuteranopia (no green cones) | #BCB184 | 0.117 |
| Tritanopia (no blue cones) | #52C6B6 | 0.078 |
| Achromatopsia (no color) | #B5B5B5 | 0.142 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66C97F
#66C97F
oklch(75.7% 0.142 150.1)
- #E28DDB
#E28DDB
oklch(75.6% 0.143 329.8)
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 #66C97F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.019
- Dark Mint #48C072 ΔE 0.039
- Seaweed #18D17B ΔE 0.044
- Greenblue #23C48B ΔE 0.044
- Algae Green #21C36F ΔE 0.051
- Emerald #06D6A0 ΔE 0.051
- Dark Mint Green #20C073 ΔE 0.053
- Medium Aquamarine #66CDAA ΔE 0.055
Use #66C97F 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.