#66BB36
Closest named color: Leafy Green (#51B73B). oklch(71.2% 0.186 136.5), rgb(102, 187, 54).
Aa
Black text reads best on this color (8.72:1).
About this color
#66BB36 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.186 and its hue 137°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Leafy Green (#51B73B), ΔE 0.023 away. Black text reads best on it, at 8.72:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.186) |
| Temperature | in between |
| Nearest name | Leafy Green (#51B73B) |
| Black text | 8.72:1 |
| White text | 2.40:1 |
Values
| HEX | #66BB36 |
| RGB | rgb(102, 187, 54) |
| HSL | hsl(98, 55%, 47%) |
| OKLCH | oklch(71.2% 0.186 136.5) |
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 #66BB36 | 2.40:1 | Fails | Lc -52.1 | Large or bold text, headings |
| Black text on #66BB36 | 8.72:1 | AAA | Lc 56.9 | Large or bold text, headings |
| #66BB36 text on white | 2.40:1 | Fails | Lc 47.1 | Large or bold text, headings |
| #66BB36 text on black | 8.72:1 | AAA | Lc -54.9 | 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
#F1F8EE
oklch(97.1% 0.015 136.1)
-
Step 100
100
#E0EFDA
oklch(93.5% 0.032 136.6)
-
Step 200
200
#C6E4BA
oklch(88.6% 0.065 136.8)
-
Step 300
300
#9ED287
oklch(80.9% 0.115 136.5)
-
Step 400
400 (this color)
#66BB36
oklch(71.2% 0.186 136.5)
-
Step 500
500
#4BA100
oklch(63% 0.189 136.5)
-
Step 600
600
#3E8800
oklch(55.7% 0.167 136.5)
-
Step 700
700
#337200
oklch(49.1% 0.147 136.5)
-
Step 800
800
#295E00
oklch(42.8% 0.128 136.5)
-
Step 900
900
#214E00
oklch(37.7% 0.113 136.4)
-
Step 950
950
#112F00
oklch(27.1% 0.081 136.5)
#66BB36 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) | #C1AB20 | 0.115 |
| Deuteranopia (no green cones) | #B6A443 | 0.117 |
| Tritanopia (no blue cones) | #62B4A1 | 0.132 |
| Achromatopsia (no color) | #A7A7A7 | 0.186 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BB36
#66BB36
oklch(71.2% 0.186 136.5)
- #CF78EE
#CF78EE
oklch(71.2% 0.186 316.6)
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 #66BB36, closest first.
No curated palette has a color within ΔE 0.04 of #66BB36.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Leafy Green #51B73B ΔE 0.023
- Frog Green #58BC08 ΔE 0.026
- Dark Lime Green #7EBD01 ΔE 0.029
- Turtle Green #75B84F ΔE 0.031
- Dark Lime #84B701 ΔE 0.031
- Shamrock Green #02C14D ΔE 0.043
- Grass #5CAC2D ΔE 0.044
- Apple #6ECB3C ΔE 0.046
Use #66BB36 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.