#504B59
Closest named color: Dusty Grape (#545775). oklch(42.3% 0.024 301.6), rgb(80, 75, 89).
Aa
White text reads best on this color (8.42:1).
About this color
#504B59 is a dark close to neutral grey. In OKLCH its lightness is 42%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Dusty Grape (#545775), ΔE 0.052 away. White text reads best on it, at 8.42:1.
| Hue family | Neutrals |
| Lightness | dark (42%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.49:1 |
| White text | 8.42:1 |
Values
| HEX | #504B59 |
| RGB | rgb(80, 75, 89) |
| HSL | hsl(261, 9%, 32%) |
| OKLCH | oklch(42.3% 0.024 301.6) |
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 #504B59 | 8.42:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #504B59 | 2.49:1 | Fails | Lc 14.9 | Not readable |
| #504B59 text on white | 8.42:1 | AAA | Lc 89.1 | Fine for body text |
| #504B59 text on black | 2.49:1 | Fails | Lc -13.2 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#EAE9EC
oklch(93.6% 0.004 301.4)
-
Step 200
200
#DAD8DD
oklch(88.5% 0.007 304.2)
-
Step 300
300
#C2BFC8
oklch(81% 0.013 301.2)
-
Step 400
400
#A39EAC
oklch(70.8% 0.021 302.1)
-
Step 500
500
#8C8698
oklch(63.1% 0.027 300.8)
-
Step 600
600
#766F83
oklch(55.5% 0.032 301.3)
-
Step 700
700
#635D6F
oklch(49% 0.029 300.5)
-
Step 800
800 (this color)
#504B59
oklch(42.3% 0.024 301.6)
-
Step 900
900
#433F4A
oklch(37.6% 0.019 302)
-
Step 950
950
#27252B
oklch(26.9% 0.011 300.8)
#504B59 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) | #494D5A | 0.012 |
| Deuteranopia (no green cones) | #494D59 | 0.012 |
| Tritanopia (no blue cones) | #4F4D50 | 0.018 |
| Achromatopsia (no color) | #4D4D4D | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504B59
#504B59
oklch(42.3% 0.024 301.6)
- #4C5042
#4C5042
oklch(42.3% 0.023 120.4)
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 #504B59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.052
- Dark Slate Gray #2F4F4F ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.058
- YInMn Blue #415A77 ΔE 0.058
- Dark Grey Blue #29465B ΔE 0.061
- Purple Brown #673A3F ΔE 0.063
- Dusk #4E5481 ΔE 0.065
- Charcoal #264653 ΔE 0.065
Use #504B59 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.