#556764
Closest named color: Slate (#516572). oklch(49.8% 0.022 184.2), rgb(85, 103, 100).
Aa
White text reads best on this color (5.98:1).
About this color
#556764 is a medium-dark close to neutral grey. In OKLCH its lightness is 50%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.026 away. White text reads best on it, at 5.98:1.
| Hue family | Neutrals |
| Lightness | medium-dark (50%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.51:1 |
| White text | 5.98:1 |
Values
| HEX | #556764 |
| RGB | rgb(85, 103, 100) |
| HSL | hsl(170, 10%, 37%) |
| OKLCH | oklch(49.8% 0.022 184.2) |
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 #556764 | 5.98:1 | AA | Lc -85.1 | Fine for body text |
| Black text on #556764 | 3.51:1 | AA large text | Lc 24.1 | Dividers and decoration only |
| #556764 text on white | 5.98:1 | AA | Lc 79.9 | Fine for body text |
| #556764 text on black | 3.51:1 | AA large text | Lc -21.9 | 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
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D5DAD9
oklch(88.4% 0.006 183)
-
Step 300
300
#B9C3C1
oklch(80.9% 0.011 182.8)
-
Step 400
400
#95A4A2
oklch(70.6% 0.017 187.1)
-
Step 500
500
#7B8E8B
oklch(63.1% 0.022 185.1)
-
Step 600
600
#647875
oklch(55.6% 0.024 185.5)
-
Step 700
700 (this color)
#556764
oklch(49.8% 0.022 184.2)
-
Step 800
800
#445250
oklch(42.6% 0.018 186)
-
Step 900
900
#394442
oklch(37.6% 0.015 183.3)
-
Step 950
950
#222827
oklch(27.1% 0.009 184.6)
#556764 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) | #656564 | 0.024 |
| Deuteranopia (no green cones) | #626264 | 0.023 |
| Tritanopia (no blue cones) | #506866 | 0.007 |
| Achromatopsia (no color) | #636363 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556764
#556764
oklch(49.8% 0.022 184.2)
- #6E5E61
#6E5E61
oklch(49.8% 0.021 5.1)
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 #556764, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.026
- Dim Gray #696969 ΔE 0.032
- Dark Aqua #05696B ΔE 0.063
- Battleship Gray #6C757D ΔE 0.063
- Dusty Grape #545775 ΔE 0.064
- Dark Aquamarine #017371 ΔE 0.064
- Deep Turquoise #017374 ΔE 0.064
- YInMn Blue #415A77 ΔE 0.065
Use #556764 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.