#555A4F
Closest named color: Slate (#516572). oklch(46% 0.019 127.1), rgb(85, 90, 79).
Aa
White text reads best on this color (7.09:1).
About this color
#555A4F is a medium-dark close to neutral grey. In OKLCH its lightness is 46%, its chroma 0.019. It has too little chroma to lean warm or cool. The nearest named color is Slate (#516572), ΔE 0.055 away. White text reads best on it, at 7.09:1.
| Hue family | Neutrals |
| Lightness | medium-dark (46%) |
| Chroma | close to neutral grey (0.019) |
| Temperature | neutral |
| Nearest name | Slate (#516572) |
| Black text | 2.96:1 |
| White text | 7.09:1 |
Values
| HEX | #555A4F |
| RGB | rgb(85, 90, 79) |
| HSL | hsl(87, 7%, 33%) |
| OKLCH | oklch(46% 0.019 127.1) |
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 #555A4F | 7.09:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #555A4F | 2.96:1 | Fails | Lc 19.4 | Dividers and decoration only |
| #555A4F text on white | 7.09:1 | AAA | Lc 84.6 | Fine for body text |
| #555A4F text on black | 2.96:1 | Fails | Lc -17.4 | 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
#F5F5F5
oklch(97% 0 0)
-
Step 100
100
#E9EAE8
oklch(93.6% 0.003 128.5)
-
Step 200
200
#D8DAD6
oklch(88.6% 0.006 128.5)
-
Step 300
300
#BFC2BC
oklch(81% 0.009 128.6)
-
Step 400
400
#9EA299
oklch(70.6% 0.014 126.5)
-
Step 500
500
#868C80
oklch(63.2% 0.019 128.8)
-
Step 600
600
#707669
oklch(55.7% 0.021 127.4)
-
Step 700
700 (this color)
#555A4F
oklch(46% 0.019 127.1)
-
Step 800
800
#4D5148
oklch(42.8% 0.015 126.7)
-
Step 900
900
#40433C
oklch(37.8% 0.012 126)
-
Step 950
950
#252723
oklch(26.9% 0.008 128.8)
#555A4F 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) | #5B584E | 0.010 |
| Deuteranopia (no green cones) | #5B584F | 0.011 |
| Tritanopia (no blue cones) | #565957 | 0.014 |
| Achromatopsia (no color) | #585858 | 0.019 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #555A4F
#555A4F
oklch(46% 0.019 127.1)
- #5B5560
#5B5560
oklch(45.9% 0.019 309.9)
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 #555A4F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Slate #516572 ΔE 0.055
- Dark Green Blue #1F6357 ΔE 0.061
- Dim Gray #696969 ΔE 0.064
- Dusty Grape #545775 ΔE 0.066
- Dark Slate Gray #2F4F4F ΔE 0.067
- YInMn Blue #415A77 ΔE 0.069
- Pine #2B5D34 ΔE 0.074
- Camo Green #526525 ΔE 0.076
Use #555A4F 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.