#51665A
Closest named color: Slate (#516572). oklch(48.9% 0.032 159.9), rgb(81, 102, 90).
Aa
White text reads best on this color (6.18:1).
About this color
#51665A is a medium-dark, muted green. In OKLCH its lightness is 49%, its chroma 0.032 and its hue 160°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Slate (#516572), ΔE 0.040 away. White text reads best on it, at 6.18:1.
| Hue family | Greens |
| Lightness | medium-dark (49%) |
| Chroma | muted (0.032) |
| Temperature | in between |
| Nearest name | Slate (#516572) |
| Black text | 3.39:1 |
| White text | 6.18:1 |
Values
| HEX | #51665A |
| RGB | rgb(81, 102, 90) |
| HSL | hsl(146, 11%, 36%) |
| OKLCH | oklch(48.9% 0.032 159.9) |
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 #51665A | 6.18:1 | AA | Lc -86.0 | Fine for body text |
| Black text on #51665A | 3.39:1 | AA large text | Lc 23.2 | Dividers and decoration only |
| #51665A text on white | 6.18:1 | AA | Lc 80.8 | Fine for body text |
| #51665A text on black | 3.39:1 | AA large text | Lc -21.0 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E7EBE9
oklch(93.6% 0.005 165)
-
Step 200
200
#D5DBD7
oklch(88.6% 0.008 157.1)
-
Step 300
300
#B9C4BD
oklch(81% 0.015 158.2)
-
Step 400
400
#94A69B
oklch(70.8% 0.026 158.9)
-
Step 500
500
#7A9083
oklch(63.2% 0.032 159.4)
-
Step 600
600
#637A6C
oklch(55.7% 0.034 158.3)
-
Step 700
700 (this color)
#51665A
oklch(48.9% 0.032 159.9)
-
Step 800
800
#43544A
oklch(42.8% 0.027 159.2)
-
Step 900
900
#38453E
oklch(37.6% 0.021 161.7)
-
Step 950
950
#212824
oklch(26.8% 0.012 160.4)
#51665A 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) | #656359 | 0.030 |
| Deuteranopia (no green cones) | #62605B | 0.030 |
| Tritanopia (no blue cones) | #4D6662 | 0.013 |
| Achromatopsia (no color) | #616161 | 0.032 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51665A
#51665A
oklch(48.9% 0.032 159.9)
- #6D5966
#6D5966
oklch(48.8% 0.033 339.3)
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 #51665A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.040
- Dim Gray #696969 ΔE 0.045
- Dark Green Blue #1F6357 ΔE 0.055
- Dark Moss Green #606C38 ΔE 0.059
- Dark Aqua #05696B ΔE 0.060
- Dark Aquamarine #017371 ΔE 0.063
- Deep Turquoise #017374 ΔE 0.064
- Dark Olive Green #556B2F ΔE 0.066
Use #51665A 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.