#554D4B
Closest named color: Dark Slate Gray (#2F4F4F). oklch(42.7% 0.011 34.3), rgb(85, 77, 75).
Aa
White text reads best on this color (8.23:1).
About this color
#554D4B is a dark close to neutral grey. In OKLCH its lightness is 43%, its chroma 0.011. It has too little chroma to lean warm or cool. The nearest named color is Dark Slate Gray (#2F4F4F), ΔE 0.054 away. White text reads best on it, at 8.23:1.
| Hue family | Neutrals |
| Lightness | dark (43%) |
| Chroma | close to neutral grey (0.011) |
| Temperature | neutral |
| Nearest name | Dark Slate Gray (#2F4F4F) |
| Black text | 2.54:1 |
| White text | 8.23:1 |
Values
| HEX | #554D4B |
| RGB | rgb(85, 77, 75) |
| HSL | hsl(12, 6%, 31%) |
| OKLCH | oklch(42.7% 0.011 34.3) |
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 #554D4B | 8.23:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #554D4B | 2.54:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #554D4B text on white | 8.23:1 | AAA | Lc 88.5 | Fine for body text |
| #554D4B text on black | 2.54:1 | Fails | Lc -13.7 | Not readable |
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 800.
-
Step 50
50
#F6F5F5
oklch(97.1% 0.001 17.2)
-
Step 100
100
#EBE9E9
oklch(93.6% 0.002 17.2)
-
Step 200
200
#DBD8D7
oklch(88.4% 0.004 39.5)
-
Step 300
300
#C5BFBE
oklch(80.9% 0.007 28.8)
-
Step 400
400
#A79E9C
oklch(70.6% 0.011 32.5)
-
Step 500
500
#918784
oklch(63.1% 0.013 37.4)
-
Step 600
600
#7C706E
oklch(55.6% 0.015 28.9)
-
Step 700
700
#685E5C
oklch(49.1% 0.013 31.1)
-
Step 800
800 (this color)
#554D4B
oklch(42.7% 0.011 34.3)
-
Step 900
900
#46403E
oklch(37.7% 0.009 39.4)
-
Step 950
950
#292525
oklch(26.9% 0.006 17.5)
#554D4B 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) | #4F4E4B | 0.010 |
| Deuteranopia (no green cones) | #504F4B | 0.010 |
| Tritanopia (no blue cones) | #574C4C | 0.005 |
| Achromatopsia (no color) | #4F4F4F | 0.011 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #554D4B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Gray #2F4F4F ΔE 0.054
- Purple Brown #673A3F ΔE 0.058
- Charcoal Grey #3C4142 ΔE 0.059
- Brownish Purple #76424E ΔE 0.066
- Dusty Grape #545775 ΔE 0.067
- Mud Brown #60460F ΔE 0.072
- YInMn Blue #415A77 ΔE 0.073
- Charcoal #264653 ΔE 0.076
Use #554D4B 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.