#51545F
Closest named color: Dusty Grape (#545775). oklch(44.7% 0.018 273.5), rgb(81, 84, 95).
Aa
White text reads best on this color (7.54:1).
About this color
#51545F is a dark close to neutral grey. In OKLCH its lightness is 45%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Dusty Grape (#545775), ΔE 0.036 away. White text reads best on it, at 7.54:1.
| Hue family | Neutrals |
| Lightness | dark (45%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.78:1 |
| White text | 7.54:1 |
Values
| HEX | #51545F |
| RGB | rgb(81, 84, 95) |
| HSL | hsl(227, 8%, 35%) |
| OKLCH | oklch(44.7% 0.018 273.5) |
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 #51545F | 7.54:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #51545F | 2.78:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #51545F text on white | 7.54:1 | AAA | Lc 86.2 | Fine for body text |
| #51545F text on black | 2.78:1 | Fails | Lc -15.8 | 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 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
#D8D9DD
oklch(88.6% 0.006 275)
-
Step 300
300
#BEC0C8
oklch(80.9% 0.011 274.9)
-
Step 400
400
#9DA0AC
oklch(70.7% 0.018 274.7)
-
Step 500
500
#858997
oklch(63.1% 0.021 273.1)
-
Step 600
600
#6F7382
oklch(55.7% 0.024 273.8)
-
Step 700
700
#5C606E
oklch(49.1% 0.023 272.9)
-
Step 800
800 (this color)
#51545F
oklch(44.7% 0.018 273.5)
-
Step 900
900
#3F4149
oklch(37.6% 0.014 274.6)
-
Step 950
950
#25262B
oklch(27% 0.009 276.8)
#51545F 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) | #515560 | 0.003 |
| Deuteranopia (no green cones) | #50545F | 0.002 |
| Tritanopia (no blue cones) | #4E5658 | 0.016 |
| Achromatopsia (no color) | #545454 | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #51545F
#51545F
oklch(44.7% 0.018 273.5)
- #585449
#585449
oklch(44.6% 0.018 90.4)
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 #51545F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.036
- YInMn Blue #415A77 ΔE 0.042
- Slate #516572 ΔE 0.052
- Dusk #4E5481 ΔE 0.057
- Dark Slate Gray #2F4F4F ΔE 0.059
- Petrol #005F6A ΔE 0.071
- Light Navy Blue #2E5A88 ΔE 0.074
- Dark Green Blue #1F6357 ΔE 0.074
Use #51545F 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.