#66BB27
Closest named color: Frog Green (#58BC08). oklch(71.1% 0.194 135.5), rgb(102, 187, 39).
Aa
Black text reads best on this color (8.70:1).
About this color
#66BB27 is a medium-light, vivid green. In OKLCH its lightness is 71%, its chroma 0.194 and its hue 135°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Frog Green (#58BC08), ΔE 0.018 away. Black text reads best on it, at 8.70:1.
| Hue family | Greens |
| Lightness | medium-light (71%) |
| Chroma | vivid (0.194) |
| Temperature | in between |
| Nearest name | Frog Green (#58BC08) |
| Black text | 8.70:1 |
| White text | 2.41:1 |
Values
| HEX | #66BB27 |
| RGB | rgb(102, 187, 39) |
| HSL | hsl(94, 65%, 44%) |
| OKLCH | oklch(71.1% 0.194 135.5) |
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 #66BB27 | 2.41:1 | Fails | Lc -52.2 | Large or bold text, headings |
| Black text on #66BB27 | 8.70:1 | AAA | Lc 56.8 | Large or bold text, headings |
| #66BB27 text on white | 2.41:1 | Fails | Lc 47.2 | Large or bold text, headings |
| #66BB27 text on black | 8.70:1 | AAA | Lc -54.8 | 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
#F1F8ED
oklch(97.1% 0.016 133.8)
-
Step 100
100
#E0F0D8
oklch(93.7% 0.036 135)
-
Step 200
200
#C6E4B8
oklch(88.6% 0.067 135.7)
-
Step 300
300
#9ED282
oklch(80.8% 0.12 135.2)
-
Step 400
400 (this color)
#66BB27
oklch(71.1% 0.194 135.5)
-
Step 500
500
#50A000
oklch(63% 0.186 135.5)
-
Step 600
600
#438700
oklch(55.6% 0.164 135.4)
-
Step 700
700
#377200
oklch(49.2% 0.145 135.5)
-
Step 800
800
#2C5D00
oklch(42.7% 0.126 135.4)
-
Step 900
900
#244E00
oklch(37.8% 0.111 135.4)
-
Step 950
950
#132E00
oklch(26.9% 0.079 135.2)
#66BB27 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) | #C2AB00 | 0.117 |
| Deuteranopia (no green cones) | #B7A438 | 0.119 |
| Tritanopia (no blue cones) | #63B4A0 | 0.140 |
| Achromatopsia (no color) | #A7A7A7 | 0.195 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66BB27
#66BB27
oklch(71.1% 0.194 135.5)
- #CF76F3
#CF76F3
oklch(71.2% 0.194 315.4)
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 #66BB27, closest first.
No curated palette has a color within ΔE 0.04 of #66BB27.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Frog Green #58BC08 ΔE 0.018
- Leafy Green #51B73B ΔE 0.025
- Dark Lime Green #7EBD01 ΔE 0.026
- Dark Lime #84B701 ΔE 0.030
- Turtle Green #75B84F ΔE 0.039
- Shamrock Green #02C14D ΔE 0.045
- Apple #6ECB3C ΔE 0.046
- Grass #5CAC2D ΔE 0.046
Use #66BB27 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.