#66A028
Closest named color: Mid Green (#50A747). oklch(64.2% 0.16 132.2), rgb(102, 160, 40).
Aa
Black text reads best on this color (6.62:1).
About this color
#66A028 is a medium-light, vivid green. In OKLCH its lightness is 64%, its chroma 0.160 and its hue 132°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Mid Green (#50A747), ΔE 0.029 away. Black text reads best on it, at 6.62:1.
| Hue family | Greens |
| Lightness | medium-light (64%) |
| Chroma | vivid (0.160) |
| Temperature | in between |
| Nearest name | Mid Green (#50A747) |
| Black text | 6.62:1 |
| White text | 3.17:1 |
Values
| HEX | #66A028 |
| RGB | rgb(102, 160, 40) |
| HSL | hsl(89, 60%, 39%) |
| OKLCH | oklch(64.2% 0.16 132.2) |
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 #66A028 | 3.17:1 | AA large text | Lc -64.0 | Content text, not long reading |
| Black text on #66A028 | 6.62:1 | AA | Lc 45.4 | Large or bold text, headings |
| #66A028 text on white | 3.17:1 | AA large text | Lc 58.6 | Large or bold text, headings |
| #66A028 text on black | 6.62:1 | AA | Lc -43.1 | 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
#F3F7F0
oklch(97.1% 0.01 131.4)
-
Step 100
100
#E4EDDE
oklch(93.5% 0.022 132.5)
-
Step 200
200
#CFE0C2
oklch(88.6% 0.044 131.5)
-
Step 300
300
#AECC97
oklch(80.9% 0.079 132)
-
Step 400
400
#83B15C
oklch(70.8% 0.125 132.2)
-
Step 500
500 (this color)
#66A028
oklch(64.2% 0.16 132.2)
-
Step 600
600
#4E8500
oklch(55.6% 0.155 132.4)
-
Step 700
700
#417000
oklch(49.2% 0.137 132.3)
-
Step 800
800
#345B00
oklch(42.5% 0.119 132.3)
-
Step 900
900
#2B4C01
oklch(37.6% 0.104 132.2)
-
Step 950
950
#1A2D06
oklch(27.1% 0.066 131.9)
#66A028 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) | #A7930F | 0.089 |
| Deuteranopia (no green cones) | #9F8F34 | 0.090 |
| Tritanopia (no blue cones) | #679989 | 0.121 |
| Achromatopsia (no color) | #919191 | 0.161 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A028
#66A028
oklch(64.2% 0.16 132.2)
- #AD6CD2
#AD6CD2
oklch(64.2% 0.16 312.1)
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 #66A028, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mid Green #50A747 ΔE 0.029
- Leaf #71AA34 ΔE 0.033
- Grass #5CAC2D ΔE 0.034
- Leaf Green #5CA904 ΔE 0.034
- Flat Green #699D4C ΔE 0.036
- Fern #63A950 ΔE 0.036
- Muted Green #5FA052 ΔE 0.037
- Off Green #6BA353 ΔE 0.039
Use #66A028 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.