#555E58
Closest named color: Slate (#516572). oklch(47.2% 0.015 156.6), rgb(85, 94, 88).
Aa
White text reads best on this color (6.71:1).
About this color
#555E58 is a medium-dark close to neutral grey. In OKLCH its lightness is 47%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.040 away. White text reads best on it, at 6.71:1.
| Hue family | Neutrals |
| Lightness | medium-dark (47%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 3.12:1 |
| White text | 6.71:1 |
Values
| HEX | #555E58 |
| RGB | rgb(85, 94, 88) |
| HSL | hsl(140, 5%, 35%) |
| OKLCH | oklch(47.2% 0.015 156.6) |
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 #555E58 | 6.71:1 | AA | Lc -88.2 | Fine for body text |
| Black text on #555E58 | 3.12:1 | AA large text | Lc 20.9 | Dividers and decoration only |
| #555E58 text on white | 6.71:1 | AA | Lc 83.1 | Fine for body text |
| #555E58 text on black | 3.12:1 | AA large text | Lc -18.8 | 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
#F5F6F5
oklch(97.2% 0.002 145.6)
-
Step 100
100
#E9EAE9
oklch(93.6% 0.002 145.6)
-
Step 200
200
#D7DAD8
oklch(88.5% 0.004 157.2)
-
Step 300
300
#BDC2BF
oklch(80.9% 0.007 160)
-
Step 400
400
#9BA39E
oklch(70.8% 0.012 158.7)
-
Step 500
500
#838C86
oklch(63.1% 0.014 156.8)
-
Step 600
600
#6C766F
oklch(55.5% 0.016 155.3)
-
Step 700
700 (this color)
#555E58
oklch(47.2% 0.015 156.6)
-
Step 800
800
#4A514C
oklch(42.7% 0.012 154.8)
-
Step 900
900
#3E433F
oklch(37.7% 0.009 151.6)
-
Step 950
950
#242725
oklch(26.9% 0.006 156.8)
#555E58 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) | #5E5C58 | 0.015 |
| Deuteranopia (no green cones) | #5C5B58 | 0.013 |
| Tritanopia (no blue cones) | #545E5C | 0.006 |
| Achromatopsia (no color) | #5C5C5C | 0.015 |
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 #555E58, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.040
- Dim Gray #696969 ΔE 0.051
- Dusty Grape #545775 ΔE 0.058
- Dark Green Blue #1F6357 ΔE 0.060
- YInMn Blue #415A77 ΔE 0.061
- Dark Aqua #05696B ΔE 0.069
- Petrol #005F6A ΔE 0.074
- Dark Moss Green #606C38 ΔE 0.074
Use #555E58 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.