#66BB2D
Closest named color: Frog Green (#58BC08). oklch(71.1% 0.191 135.8), rgb(102, 187, 45).
Aa
Black text reads best on this color (8.71:1).
About this color
#66BB2D is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.191 and its hue 136°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Frog Green (#58BC08), ΔE 0.021 away. Black text reads best on it, at 8.71:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.191) |
| Temperature | in between |
| Nearest name | Frog Green (#58BC08) |
| Black text | 8.71:1 |
| White text | 2.41:1 |
Values
| HEX | #66BB2D |
| RGB | rgb(102, 187, 45) |
| HSL | hsl(96, 61%, 45%) |
| OKLCH | oklch(71.1% 0.191 135.8) |
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 #66BB2D | 2.41:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #66BB2D | 8.71:1 | AAA | Lc 56.8 | Large or bold text, headings |
| #66BB2D text on white | 2.41:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #66BB2D text on black | 8.71:1 | 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
#E0F0D9
oklch(93.7% 0.035 136)
-
Step 200
200
#C6E4B8
oklch(88.6% 0.067 135.7)
-
Step 300
300
#9ED284
oklch(80.9% 0.118 135.7)
-
Step 400
400 (this color)
#66BB2D
oklch(71.1% 0.191 135.8)
-
Step 500
500
#4FA100
oklch(63.2% 0.187 135.8)
-
Step 600
600
#418700
oklch(55.5% 0.165 135.8)
-
Step 700
700
#367200
oklch(49.2% 0.146 135.8)
-
Step 800
800
#2B5D00
oklch(42.6% 0.126 135.7)
-
Step 900
900
#234E00
oklch(37.8% 0.112 135.7)
-
Step 950
950
#122E00
oklch(26.8% 0.079 135.7)
#66BB2D 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) | #C2AB0A | 0.117 |
| Deuteranopia (no green cones) | #B6A43C | 0.117 |
| Tritanopia (no blue cones) | #63B4A0 | 0.137 |
| Achromatopsia (no color) | #A7A7A7 | 0.192 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BB2D
#66BB2D
oklch(71.1% 0.191 135.8)
- #CF77F1
#CF77F1
oklch(71.2% 0.19 315.8)
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 #66BB2D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Frog Green #58BC08 ΔE 0.021
- Leafy Green #51B73B ΔE 0.024
- Dark Lime Green #7EBD01 ΔE 0.027
- Dark Lime #84B701 ΔE 0.030
- Turtle Green #75B84F ΔE 0.036
- Shamrock Green #02C14D ΔE 0.044
- Grass #5CAC2D ΔE 0.045
- Apple #6ECB3C ΔE 0.046
Use #66BB2D 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.