#66916C
Closest named color: Slate Green (#658D6D). oklch(61.5% 0.073 148.3), rgb(102, 145, 108).
Aa
Black text reads best on this color (5.83:1).
About this color
#66916C is a medium-dark, moderately saturated green. In OKLCH its lightness is 61%, its chroma 0.073 and its hue 148°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.013 away. Black text reads best on it, at 5.83:1.
| Hue family | Greens |
| Lightness | medium-dark (61%) |
| Chroma | moderately saturated (0.073) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 5.83:1 |
| White text | 3.60:1 |
Values
| HEX | #66916C |
| RGB | rgb(102, 145, 108) |
| HSL | hsl(128, 17%, 48%) |
| OKLCH | oklch(61.5% 0.073 148.3) |
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 #66916C | 3.60:1 | AA large text | Lc -69.0 | Content text, not long reading |
| Black text on #66916C | 5.83:1 | AA | Lc 40.5 | Non-text elements, placeholder text |
| #66916C text on white | 3.60:1 | AA large text | Lc 63.5 | Content text, not long reading |
| #66916C text on black | 5.83:1 | AA | Lc -38.1 | 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
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E5ECE6
oklch(93.6% 0.011 149.9)
-
Step 200
200
#D1DDD2
oklch(88.5% 0.02 147.8)
-
Step 300
300
#B2C7B4
oklch(80.8% 0.035 148)
-
Step 400
400
#89AB8D
oklch(70.7% 0.057 148.2)
-
Step 500
500 (this color)
#66916C
oklch(61.5% 0.073 148.3)
-
Step 600
600
#528059
oklch(55.6% 0.079 148.2)
-
Step 700
700
#426C49
oklch(49% 0.073 148.5)
-
Step 800
800
#37583C
oklch(42.6% 0.06 148.2)
-
Step 900
900
#304933
oklch(37.8% 0.048 147.6)
-
Step 950
950
#1C2B1E
oklch(27.1% 0.031 148.1)
#66916C 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) | #928A6A | 0.060 |
| Deuteranopia (no green cones) | #8B856E | 0.059 |
| Tritanopia (no blue cones) | #618F87 | 0.042 |
| Achromatopsia (no color) | #878787 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66916C
#66916C
oklch(61.5% 0.073 148.3)
- #9D759B
#9D759B
oklch(61.5% 0.073 328.1)
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 #66916C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.013
- Green Grey #77926F ΔE 0.023
- Ocean Green #3D9973 ΔE 0.040
- Drab Green #749551 ΔE 0.042
- Grey Teal #5E9B8A ΔE 0.043
- Dusty Teal #4C9085 ΔE 0.043
- Camo #7F8F4E ΔE 0.044
- Moss #769958 ΔE 0.044
Use #66916C 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.