#66A044
Closest named color: Flat Green (#699D4C). oklch(64.5% 0.139 135.4), rgb(102, 160, 68).
Aa
Black text reads best on this color (6.67:1).
About this color
#66A044 is a medium-light, moderately saturated green. In OKLCH its lightness is 65%, its chroma 0.139 and its hue 135°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Flat Green (#699D4C), ΔE 0.014 away. Black text reads best on it, at 6.67:1.
| Hue family | Greens |
| Lightness | medium-light (65%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Flat Green (#699D4C) |
| Black text | 6.67:1 |
| White text | 3.14:1 |
Values
| HEX | #66A044 |
| RGB | rgb(102, 160, 68) |
| HSL | hsl(98, 40%, 45%) |
| OKLCH | oklch(64.5% 0.139 135.4) |
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 #66A044 | 3.14:1 | AA large text | Lc -63.8 | Content text, not long reading |
| Black text on #66A044 | 6.67:1 | AA | Lc 45.7 | Large or bold text, headings |
| #66A044 text on white | 3.14:1 | AA large text | Lc 58.4 | Large or bold text, headings |
| #66A044 text on black | 6.67:1 | AA | Lc -43.4 | Non-text elements, placeholder text |
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 500.
-
Step 50
50
#F3F7F1
oklch(97.1% 0.009 134.9)
-
Step 100
100
#E4EDE0
oklch(93.6% 0.02 135.8)
-
Step 200
200
#CEDFC7
oklch(88.4% 0.037 136.5)
-
Step 300
300
#AECB9F
oklch(80.9% 0.068 135)
-
Step 400
400
#82B06A
oklch(70.7% 0.109 135.5)
-
Step 500
500 (this color)
#66A044
oklch(64.5% 0.139 135.4)
-
Step 600
600
#48861A
oklch(55.7% 0.151 135.4)
-
Step 700
700
#397108
oklch(49.1% 0.14 135.3)
-
Step 800
800
#2F5C0E
oklch(42.6% 0.116 135.5)
-
Step 900
900
#2A4C15
oklch(37.7% 0.091 135.6)
-
Step 950
950
#192D0E
oklch(27.1% 0.058 135.8)
#66A044 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) | #A5943B | 0.086 |
| Deuteranopia (no green cones) | #9D8F4B | 0.087 |
| Tritanopia (no blue cones) | #659A8C | 0.101 |
| Achromatopsia (no color) | #919191 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A044
#66A044
oklch(64.5% 0.139 135.4)
- #AE71C7
#AE71C7
oklch(64.5% 0.14 315.6)
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 #66A044, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Flat Green #699D4C ΔE 0.014
- Muted Green #5FA052 ΔE 0.015
- Off Green #6BA353 ΔE 0.018
- Fern #63A950 ΔE 0.025
- Mid Green #50A747 ΔE 0.026
- Leaf #71AA34 ΔE 0.037
- Dark Pastel Green #56AE57 ΔE 0.039
- Dull Green #74A662 ΔE 0.040
Use #66A044 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.