#55686B
Closest named color: Slate (#516572). oklch(50.3% 0.023 208.1), rgb(85, 104, 107).
Aa
White text reads best on this color (5.86:1).
About this color
#55686B is a medium-dark close to neutral grey. In OKLCH its lightness is 50%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.018 away. White text reads best on it, at 5.86:1.
| Hue family | Neutrals |
| Lightness | medium-dark (50%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.57:1 |
| White text | 5.86:1 |
Values
| HEX | #55686B |
| RGB | rgb(85, 104, 107) |
| HSL | hsl(188, 11%, 38%) |
| OKLCH | oklch(50.3% 0.023 208.1) |
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 #55686B | 5.86:1 | AA | Lc -84.6 | Fine for body text |
| Black text on #55686B | 3.57:1 | AA large text | Lc 24.7 | Dividers and decoration only |
| #55686B text on white | 5.86:1 | AA | Lc 79.4 | Fine for body text |
| #55686B text on black | 3.57:1 | AA large text | Lc -22.5 | 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
#F4F6F6
oklch(97.2% 0.002 197.1)
-
Step 100
100
#E7EAEB
oklch(93.5% 0.004 219.5)
-
Step 200
200
#D5DADB
oklch(88.5% 0.006 211)
-
Step 300
300
#B9C3C4
oklch(81% 0.011 204.1)
-
Step 400
400
#94A4A6
oklch(70.7% 0.018 205.8)
-
Step 500
500
#7A8E91
oklch(63.2% 0.023 207.6)
-
Step 600
600
#63787B
oklch(55.7% 0.025 207)
-
Step 700
700 (this color)
#55686B
oklch(50.3% 0.023 208.1)
-
Step 800
800
#435255
oklch(42.7% 0.019 211.1)
-
Step 900
900
#394446
oklch(37.8% 0.015 209.8)
-
Step 950
950
#212829
oklch(27% 0.01 207.1)
#55686B 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) | #65666B | 0.023 |
| Deuteranopia (no green cones) | #61636B | 0.022 |
| Tritanopia (no blue cones) | #4E6A69 | 0.012 |
| Achromatopsia (no color) | #656565 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #55686B
#55686B
oklch(50.3% 0.023 208.1)
- #715F5D
#715F5D
oklch(50.2% 0.024 25.4)
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 #55686B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.018
- Dim Gray #696969 ΔE 0.030
- Metallic Blue #4F738E ΔE 0.055
- Battleship Gray #6C757D ΔE 0.057
- Dusty Grape #545775 ΔE 0.060
- YInMn Blue #415A77 ΔE 0.061
- Deep Turquoise #017374 ΔE 0.063
- Dark Aquamarine #017371 ΔE 0.064
Use #55686B 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.