#556263
Closest named color: Slate (#516572). oklch(48.5% 0.016 202.3), rgb(85, 98, 99).
Aa
White text reads best on this color (6.33:1).
About this color
#556263 is a medium-dark close to neutral grey. In OKLCH its lightness is 49%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.023 away. White text reads best on it, at 6.33:1.
| Hue family | Neutrals |
| Lightness | medium-dark (49%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.31:1 |
| White text | 6.33:1 |
Values
| HEX | #556263 |
| RGB | rgb(85, 98, 99) |
| HSL | hsl(184, 8%, 36%) |
| OKLCH | oklch(48.5% 0.016 202.3) |
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 #556263 | 6.33:1 | AA | Lc -86.7 | Fine for body text |
| Black text on #556263 | 3.31:1 | AA large text | Lc 22.5 | Dividers and decoration only |
| #556263 text on white | 6.33:1 | AA | Lc 81.5 | Fine for body text |
| #556263 text on black | 3.31:1 | AA large text | Lc -20.3 | 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
#F5F6F6
oklch(97.2% 0.001 197.1)
-
Step 100
100
#E8EAEA
oklch(93.6% 0.002 197.1)
-
Step 200
200
#D6DADA
oklch(88.5% 0.004 197.1)
-
Step 300
300
#BBC2C3
oklch(80.9% 0.008 207.1)
-
Step 400
400
#98A3A4
oklch(70.7% 0.013 203.4)
-
Step 500
500
#7F8C8E
oklch(63% 0.015 207.9)
-
Step 600
600
#687678
oklch(55.5% 0.017 207.1)
-
Step 700
700 (this color)
#556263
oklch(48.5% 0.016 202.3)
-
Step 800
800
#475152
oklch(42.6% 0.013 204)
-
Step 900
900
#3B4344
oklch(37.6% 0.011 205.8)
-
Step 950
950
#232728
oklch(26.9% 0.006 214.4)
#556263 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) | #606163 | 0.016 |
| Deuteranopia (no green cones) | #5D5F63 | 0.014 |
| Tritanopia (no blue cones) | #516362 | 0.007 |
| Achromatopsia (no color) | #5F5F5F | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #556263
#556263
oklch(48.5% 0.016 202.3)
- #685C5B
#685C5B
oklch(48.6% 0.016 23.4)
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 #556263, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.023
- Dim Gray #696969 ΔE 0.039
- Dusty Grape #545775 ΔE 0.052
- YInMn Blue #415A77 ΔE 0.054
- Dark Green Blue #1F6357 ΔE 0.064
- Dark Aqua #05696B ΔE 0.064
- Denim #3B638C ΔE 0.071
- Metallic Blue #4F738E ΔE 0.072
Use #556263 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.