#51555E
Closest named color: Dusty Grape (#545775). oklch(44.9% 0.016 266.6), rgb(81, 85, 94).
Aa
White text reads best on this color (7.47:1).
About this color
#51555E is a dark close to neutral grey. In OKLCH its lightness is 45%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Dusty Grape (#545775), ΔE 0.038 away. White text reads best on it, at 7.47:1.
| Hue family | Neutrals |
| Lightness | dark (45%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.81:1 |
| White text | 7.47:1 |
Values
| HEX | #51555E |
| RGB | rgb(81, 85, 94) |
| HSL | hsl(222, 7%, 34%) |
| OKLCH | oklch(44.9% 0.016 266.6) |
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 #51555E | 7.47:1 | AAA | Lc -90.8 | Preferred for body text |
| Black text on #51555E | 2.81:1 | Fails | Lc 18.0 | Dividers and decoration only |
| #51555E text on white | 7.47:1 | AAA | Lc 86.0 | Fine for body text |
| #51555E text on black | 2.81:1 | Fails | Lc -16.1 | 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 800.
-
Step 50
50
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#E9EAEC
oklch(93.7% 0.003 264.5)
-
Step 200
200
#D7D9DC
oklch(88.5% 0.005 258.3)
-
Step 300
300
#BEC0C7
oklch(80.8% 0.01 273.3)
-
Step 400
400
#9CA1AA
oklch(70.8% 0.014 262.4)
-
Step 500
500
#848995
oklch(63% 0.019 267.7)
-
Step 600
600
#6E7380
oklch(55.6% 0.021 268.9)
-
Step 700
700
#5C616C
oklch(49.2% 0.019 266.1)
-
Step 800
800 (this color)
#51555E
oklch(44.9% 0.016 266.6)
-
Step 900
900
#3F4248
oklch(37.9% 0.011 264.4)
-
Step 950
950
#25262A
oklch(26.9% 0.008 274.7)
#51555E 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) | #52565E | 0.004 |
| Deuteranopia (no green cones) | #51545E | 0.003 |
| Tritanopia (no blue cones) | #4E5758 | 0.014 |
| Achromatopsia (no color) | #555555 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51555E
#51555E
oklch(44.9% 0.016 266.6)
- #59554B
#59554B
oklch(45% 0.017 88.8)
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 #51555E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.038
- YInMn Blue #415A77 ΔE 0.043
- Slate #516572 ΔE 0.050
- Dark Slate Gray #2F4F4F ΔE 0.058
- Dusk #4E5481 ΔE 0.059
- Petrol #005F6A ΔE 0.070
- Dark Green Blue #1F6357 ΔE 0.071
- Dim Gray #696969 ΔE 0.073
Use #51555E 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.