#66816D
Closest named color: Slate Green (#658D6D). oklch(57.6% 0.044 152.8), rgb(102, 129, 109).
Aa
Black text reads best on this color (4.92:1).
About this color
#66816D is a medium-dark, muted green. In OKLCH its lightness is 58%, its chroma 0.044 and its hue 153°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate Green (#658D6D), ΔE 0.036 away. Black text reads best on it, at 4.92:1.
| Hue family | Greens |
| Lightness | medium-dark (58%) |
| Chroma | muted (0.044) |
| Temperature | in between |
| Nearest name | Slate Green (#658D6D) |
| Black text | 4.92:1 |
| White text | 4.26:1 |
Values
| HEX | #66816D |
| RGB | rgb(102, 129, 109) |
| HSL | hsl(136, 12%, 45%) |
| OKLCH | oklch(57.6% 0.044 152.8) |
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 #66816D | 4.26:1 | AA large text | Lc -74.9 | Content text, not long reading |
| Black text on #66816D | 4.92:1 | AA | Lc 34.6 | Non-text elements, placeholder text |
| #66816D text on white | 4.26:1 | AA large text | Lc 69.5 | Content text, not long reading |
| #66816D text on black | 4.92:1 | AA | Lc -32.2 | 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 600.
-
Step 50
50
#F4F6F4
oklch(97.1% 0.003 145.5)
-
Step 100
100
#E7EBE8
oklch(93.6% 0.006 153.8)
-
Step 200
200
#D4DBD6
oklch(88.5% 0.01 155.1)
-
Step 300
300
#B8C4BB
oklch(80.8% 0.018 153.5)
-
Step 400
400
#93A797
oklch(70.8% 0.032 151.3)
-
Step 500
500
#78917E
oklch(63.2% 0.04 152.4)
-
Step 600
600 (this color)
#66816D
oklch(57.6% 0.044 152.8)
-
Step 700
700
#4F6856
oklch(49.2% 0.041 153.4)
-
Step 800
800
#415546
oklch(42.8% 0.035 152.4)
-
Step 900
900
#37463B
oklch(37.7% 0.027 153.2)
-
Step 950
950
#202923
oklch(27% 0.017 155.9)
#66816D 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) | #817C6C | 0.039 |
| Deuteranopia (no green cones) | #7C796E | 0.038 |
| Tritanopia (no blue cones) | #62807B | 0.023 |
| Achromatopsia (no color) | #7A7A7A | 0.044 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #66816D
#66816D
oklch(57.6% 0.044 152.8)
- #897084
#897084
oklch(57.6% 0.043 333.1)
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 #66816D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate Green #658D6D ΔE 0.036
- Medium Grey #7D7F7C ΔE 0.043
- Dark Sage #598556 ΔE 0.044
- Battleship Grey #6B7C85 ΔE 0.045
- Steel Grey #6F828A ΔE 0.047
- Dusty Teal #4C9085 ΔE 0.049
- Gray #808080 ΔE 0.050
- Battleship Gray #6C757D ΔE 0.051
Use #66816D 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.