#66A673
Closest named color: Tea (#65AB7C). oklch(66.8% 0.1 149.5), rgb(102, 166, 115).
Aa
Black text reads best on this color (7.26:1).
About this color
#66A673 is a medium-light, moderately saturated green. In OKLCH its lightness is 67%, its chroma 0.100 and its hue 150°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Tea (#65AB7C), ΔE 0.016 away. Black text reads best on it, at 7.26:1.
| Hue family | Greens |
| Lightness | medium-light (67%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Tea (#65AB7C) |
| Black text | 7.26:1 |
| White text | 2.88:1 |
Values
| HEX | #66A673 |
| RGB | rgb(102, 166, 115) |
| HSL | hsl(132, 26%, 53%) |
| OKLCH | oklch(66.8% 0.1 149.5) |
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 #66A673 | 2.88:1 | Fails | Lc -60.4 | Content text, not long reading |
| Black text on #66A673 | 7.26:1 | AAA | Lc 49.0 | Large or bold text, headings |
| #66A673 text on white | 2.88:1 | Fails | Lc 55.1 | Large or bold text, headings |
| #66A673 text on black | 7.26:1 | AAA | Lc -46.7 | 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 500.
-
Step 50
50
#F2F7F3
oklch(97.1% 0.007 151.9)
-
Step 100
100
#E4EDE5
oklch(93.7% 0.014 148.8)
-
Step 200
200
#CDDED0
oklch(88.4% 0.026 150.7)
-
Step 300
300
#ABCAB0
oklch(80.9% 0.049 149.8)
-
Step 400
400
#7EAF86
oklch(70.8% 0.079 149.1)
-
Step 500
500 (this color)
#66A673
oklch(66.8% 0.1 149.5)
-
Step 600
600
#3E854F
oklch(55.6% 0.11 149.4)
-
Step 700
700
#307040
oklch(49% 0.101 149.5)
-
Step 800
800
#295C35
oklch(42.8% 0.085 149.3)
-
Step 900
900
#264B2E
oklch(37.6% 0.065 149.4)
-
Step 950
950
#172C1B
oklch(27% 0.042 149.1)
#66A673 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) | #A79C70 | 0.084 |
| Deuteranopia (no green cones) | #9D9576 | 0.083 |
| Tritanopia (no blue cones) | #5CA499 | 0.056 |
| Achromatopsia (no color) | #989898 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66A673
#66A673
oklch(66.8% 0.1 149.5)
- #B77EB2
#B77EB2
oklch(66.8% 0.099 329.7)
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 #66A673, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Tea #65AB7C ΔE 0.016
- Dusty Green #76A973 ΔE 0.020
- Dull Green #74A662 ΔE 0.024
- Algae #54AC68 ΔE 0.031
- Greeny Grey #7EA07A ΔE 0.035
- Off Green #6BA353 ΔE 0.037
- Dark Seafoam Green #3EAF76 ΔE 0.037
- Moss #769958 ΔE 0.041
Use #66A673 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.