#66AE65
Closest named color: Boring Green (#63B365). oklch(68.5% 0.127 143.7), rgb(102, 174, 101).
Aa
Black text reads best on this color (7.80:1).
About this color
#66AE65 is a medium-light, moderately saturated green. In OKLCH its lightness is 69%, its chroma 0.127 and its hue 144°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Boring Green (#63B365), ΔE 0.014 away. Black text reads best on it, at 7.80:1.
| Hue family | Greens |
| Lightness | medium-light (69%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Boring Green (#63B365) |
| Black text | 7.80:1 |
| White text | 2.68:1 |
Values
| HEX | #66AE65 |
| RGB | rgb(102, 174, 101) |
| HSL | hsl(119, 31%, 54%) |
| OKLCH | oklch(68.5% 0.127 143.7) |
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 #66AE65 | 2.68:1 | Fails | Lc -57.3 | Large or bold text, headings |
| Black text on #66AE65 | 7.80:1 | AAA | Lc 52.0 | Large or bold text, headings |
| #66AE65 text on white | 2.68:1 | Fails | Lc 52.1 | Large or bold text, headings |
| #66AE65 text on black | 7.80:1 | AAA | Lc -49.8 | 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
#F1F7F1
oklch(97% 0.01 145.5)
-
Step 100
100
#E1EEE0
oklch(93.6% 0.023 143.4)
-
Step 200
200
#C8E1C7
oklch(88.4% 0.044 144.2)
-
Step 300
300
#A2CFA0
oklch(81% 0.081 143.7)
-
Step 400
400 (this color)
#66AE65
oklch(68.5% 0.127 143.7)
-
Step 500
500
#3FA142
oklch(63% 0.162 143.8)
-
Step 600
600
#0E8C1D
oklch(55.7% 0.177 143.7)
-
Step 700
700
#007612
oklch(49.1% 0.161 143.7)
-
Step 800
800
#066011
oklch(42.6% 0.135 143.8)
-
Step 900
900
#144F17
oklch(37.7% 0.106 143.8)
-
Step 950
950
#0E2E0F
oklch(26.8% 0.066 144)
#66AE65 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) | #B1A260 | 0.096 |
| Deuteranopia (no green cones) | #A69B69 | 0.094 |
| Tritanopia (no blue cones) | #5EAA9C | 0.080 |
| Achromatopsia (no color) | #9E9E9E | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66AE65
#66AE65
oklch(68.5% 0.127 143.7)
- #C07DC6
#C07DC6
oklch(68.4% 0.128 323.9)
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 #66AE65, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Boring Green #63B365 ΔE 0.014
- Algae #54AC68 ΔE 0.018
- Asparagus #77AB56 ΔE 0.021
- Dark Pastel Green #56AE57 ΔE 0.024
- Dull Green #74A662 ΔE 0.025
- Fern #63A950 ΔE 0.025
- Medium Sea Green #3CB371 ΔE 0.031
- Off Green #6BA353 ΔE 0.031
Use #66AE65 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.