#556368
Closest named color: Slate (#516572). oklch(49% 0.019 221.3), rgb(85, 99, 104).
Aa
White text reads best on this color (6.22:1).
About this color
#556368 is a medium-dark close to neutral grey. In OKLCH its lightness is 49%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.016 away. White text reads best on it, at 6.22:1.
| Hue family | Neutrals |
| Lightness | medium-dark (49%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.37:1 |
| White text | 6.22:1 |
Values
| HEX | #556368 |
| RGB | rgb(85, 99, 104) |
| HSL | hsl(196, 10%, 37%) |
| OKLCH | oklch(49% 0.019 221.3) |
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 #556368 | 6.22:1 | AA | Lc -86.2 | Fine for body text |
| Black text on #556368 | 3.37:1 | AA large text | Lc 23.0 | Dividers and decoration only |
| #556368 text on white | 6.22:1 | AA | Lc 81.1 | Fine for body text |
| #556368 text on black | 3.37:1 | AA large text | Lc -20.8 | 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
#E8EAEB
oklch(93.6% 0.003 228.8)
-
Step 200
200
#D6DADB
oklch(88.6% 0.005 214.3)
-
Step 300
300
#BAC2C5
oklch(80.9% 0.01 222.1)
-
Step 400
400
#97A3A7
oklch(70.7% 0.015 219.7)
-
Step 500
500
#7E8C92
oklch(63.1% 0.019 225.4)
-
Step 600
600
#67767C
oklch(55.6% 0.02 223.8)
-
Step 700
700 (this color)
#556368
oklch(49% 0.019 221.3)
-
Step 800
800
#465155
oklch(42.7% 0.015 221.7)
-
Step 900
900
#3B4346
oklch(37.7% 0.012 222.3)
-
Step 950
950
#222729
oklch(26.9% 0.008 223.7)
#556368 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) | #606268 | 0.016 |
| Deuteranopia (no green cones) | #5D6068 | 0.014 |
| Tritanopia (no blue cones) | #506564 | 0.013 |
| Achromatopsia (no color) | #616161 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556368
#556368
oklch(49% 0.019 221.3)
- #6A5D58
#6A5D58
oklch(48.9% 0.019 42.2)
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 #556368, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.016
- Dim Gray #696969 ΔE 0.036
- Dusty Grape #545775 ΔE 0.048
- YInMn Blue #415A77 ΔE 0.051
- Denim #3B638C ΔE 0.064
- Dark Aqua #05696B ΔE 0.065
- Metallic Blue #4F738E ΔE 0.065
- Dark Green Blue #1F6357 ΔE 0.068
Use #556368 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.