#66BB73
Closest named color: Soft Green (#6FC276). oklch(72% 0.133 147.5), rgb(102, 187, 115).
Aa
Black text reads best on this color (8.92:1).
About this color
#66BB73 is a medium-light, moderately saturated green. In OKLCH its lightness is 72%, its chroma 0.133 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Soft Green (#6FC276), ΔE 0.022 away. Black text reads best on it, at 8.92:1.
| Hue family | Greens |
| Lightness | medium-light (72%) |
| Chroma | moderately saturated (0.133) |
| Temperature | in between |
| Nearest name | Soft Green (#6FC276) |
| Black text | 8.92:1 |
| White text | 2.35:1 |
Values
| HEX | #66BB73 |
| RGB | rgb(102, 187, 115) |
| HSL | hsl(129, 38%, 57%) |
| OKLCH | oklch(72% 0.133 147.5) |
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 #66BB73 | 2.35:1 | Fails | Lc -51.1 | Large or bold text, headings |
| Black text on #66BB73 | 8.92:1 | AAA | Lc 57.8 | Large or bold text, headings |
| #66BB73 text on white | 2.35:1 | Fails | Lc 46.2 | Large or bold text, headings |
| #66BB73 text on black | 8.92:1 | AAA | Lc -55.8 | 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
#F1F8F1
oklch(97.2% 0.012 145.5)
-
Step 100
100
#E0EFE1
oklch(93.7% 0.024 147.3)
-
Step 200
200
#C6E2C8
oklch(88.5% 0.046 147.2)
-
Step 300
300
#9DD0A2
oklch(81% 0.083 147.3)
-
Step 400
400 (this color)
#66BB73
oklch(72% 0.133 147.5)
-
Step 500
500
#26A447
oklch(63.2% 0.17 147.5)
-
Step 600
600
#008B33
oklch(55.5% 0.163 147.4)
-
Step 700
700
#00752A
oklch(49% 0.144 147.5)
-
Step 800
800
#006021
oklch(42.6% 0.125 147.5)
-
Step 900
900
#00501A
oklch(37.6% 0.11 147.5)
-
Step 950
950
#072F10
oklch(26.9% 0.07 147.3)
#66BB73 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) | #BDAE6E | 0.107 |
| Deuteranopia (no green cones) | #B1A677 | 0.105 |
| Tritanopia (no blue cones) | #58B8A9 | 0.077 |
| Achromatopsia (no color) | #A9A9A9 | 0.134 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BB73
#66BB73
oklch(72% 0.133 147.5)
- #D185CF
#D185CF
oklch(72% 0.134 327.8)
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 #66BB73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Soft Green #6FC276 ΔE 0.022
- Boring Green #63B365 ΔE 0.025
- Dark Mint #48C072 ΔE 0.026
- Faded Green #7BB274 ΔE 0.032
- Turtle Green #75B84F ΔE 0.037
- Dark Mint Green #20C073 ΔE 0.041
- Medium Sea Green #3CB371 ΔE 0.042
- Greenblue #23C48B ΔE 0.043
Use #66BB73 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.