#66C384
Closest named color: Soft Green (#6FC276). oklch(74.3% 0.128 152.6), rgb(102, 195, 132).
Aa
Black text reads best on this color (9.70:1).
About this color
#66C384 is a medium-light, moderately saturated green. In OKLCH its lightness is 74%, its chroma 0.128 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.017 away. Black text reads best on it, at 9.70:1.
| Hue family | Greens |
| Lightness | medium-light (74%) |
| Chroma | moderately saturated (0.128) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 9.70:1 |
| White text | 2.16:1 |
Values
| HEX | #66C384 |
| RGB | rgb(102, 195, 132) |
| HSL | hsl(139, 44%, 58%) |
| OKLCH | oklch(74.3% 0.128 152.6) |
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 #66C384 | 2.16:1 | Fails | Lc -47.0 | Large or bold text, headings |
| Black text on #66C384 | 9.70:1 | AAA | Lc 61.6 | Content text, not long reading |
| #66C384 text on white | 2.16:1 | Fails | Lc 42.3 | Non-text elements, placeholder text |
| #66C384 text on black | 9.70:1 | AAA | Lc -59.9 | Large or bold text, headings |
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
#F0F8F2
oklch(97.1% 0.012 153.7)
-
Step 100
100
#DFEFE3
oklch(93.7% 0.023 153.4)
-
Step 200
200
#C4E2CB
oklch(88.5% 0.045 152.4)
-
Step 300
300
#99D0A8
oklch(80.9% 0.08 152.8)
-
Step 400
400 (this color)
#66C384
oklch(74.3% 0.128 152.6)
-
Step 500
500
#01A456
oklch(63% 0.163 152.7)
-
Step 600
600
#008A47
oklch(55.5% 0.144 152.6)
-
Step 700
700
#00743B
oklch(49% 0.127 152.7)
-
Step 800
800
#005F2F
oklch(42.5% 0.11 152.7)
-
Step 900
900
#005026
oklch(37.8% 0.099 152.3)
-
Step 950
950
#022F15
oklch(26.8% 0.067 152.7)
#66C384 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) | #C3B680 | 0.111 |
| Deuteranopia (no green cones) | #B6AC88 | 0.110 |
| Tritanopia (no blue cones) | #52C1B3 | 0.067 |
| Achromatopsia (no color) | #B0B0B0 | 0.129 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66C384
#66C384
oklch(74.3% 0.128 152.6)
- #DB8CCF
#DB8CCF
oklch(74.2% 0.128 332.4)
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 #66C384, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.017
- Dark Mint #48C072 ΔE 0.036
- Greenblue #23C48B ΔE 0.037
- Faded Green #7BB274 ΔE 0.046
- Green Blue #01C08D ΔE 0.047
- Lichen #8FB67B ΔE 0.049
- Sage Green #88B378 ΔE 0.050
- Dark Mint Green #20C073 ΔE 0.050
Use #66C384 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.