#66CC7E
Closest named color: Soft Green (#6FC276). oklch(76.4% 0.147 149.5), rgb(102, 204, 126).
Aa
Black text reads best on this color (10.50:1).
About this color
#66CC7E is a medium-light, vivid green. In OKLCH its lightness is 76%, its chroma 0.147 and its hue 149°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.027 away. Black text reads best on it, at 10.50:1.
| Hue family | Greens |
| Lightness | medium-light (76%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 10.50:1 |
| White text | 1.99:1 |
Values
| HEX | #66CC7E |
| RGB | rgb(102, 204, 126) |
| HSL | hsl(134, 50%, 60%) |
| OKLCH | oklch(76.4% 0.147 149.5) |
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 #66CC7E | 1.99:1 | Fails | Lc -42.9 | Non-text elements, placeholder text |
| Black text on #66CC7E | 10.50:1 | AAA | Lc 65.4 | Content text, not long reading |
| #66CC7E text on white | 1.99:1 | Fails | Lc 38.5 | Non-text elements, placeholder text |
| #66CC7E text on black | 10.50:1 | AAA | Lc -63.9 | 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
#EDF9EF
oklch(97% 0.018 150.6)
-
Step 100
100
#D7F2DB
oklch(93.5% 0.042 149.6)
-
Step 200
200
#B4E9BC
oklch(88.5% 0.082 149)
-
Step 300
300 (this color)
#66CC7E
oklch(76.4% 0.147 149.5)
-
Step 400
400
#00C156
oklch(70.8% 0.198 149.4)
-
Step 500
500
#00A549
oklch(63.1% 0.176 149.5)
-
Step 600
600
#008B3C
oklch(55.6% 0.155 149.4)
-
Step 700
700
#007532
oklch(49.1% 0.137 149.6)
-
Step 800
800
#006027
oklch(42.7% 0.12 149.3)
-
Step 900
900
#005020
oklch(37.7% 0.105 149.6)
-
Step 950
950
#003010
oklch(27% 0.075 149.4)
#66CC7E 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) | #CDBD79 | 0.122 |
| Deuteranopia (no green cones) | #BFB383 | 0.120 |
| Tritanopia (no blue cones) | #51C9B8 | 0.081 |
| Achromatopsia (no color) | #B7B7B7 | 0.148 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66CC7E
#66CC7E
oklch(76.4% 0.147 149.5)
- #E68EDF
#E68EDF
oklch(76.4% 0.147 329.8)
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 #66CC7E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.027
- Seaweed #18D17B ΔE 0.040
- Dark Mint #48C072 ΔE 0.044
- Emerald #06D6A0 ΔE 0.049
- Greenblue #23C48B ΔE 0.050
- Algae Green #21C36F ΔE 0.054
- Dark Mint Green #20C073 ΔE 0.058
- Medium Aquamarine #66CDAA ΔE 0.058
Use #66CC7E 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.