#504B66
Closest named color: Dusty Grape (#545775). oklch(42.9% 0.045 292.9), rgb(80, 75, 102).
Aa
White text reads best on this color (8.26:1).
About this color
#504B66 is a dark, muted purple. In OKLCH its lightness is 43%, its chroma 0.045 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.039 away. White text reads best on it, at 8.26:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | muted (0.045) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 2.53:1 |
| White text | 8.26:1 |
Values
| HEX | #504B66 |
| RGB | rgb(80, 75, 102) |
| HSL | hsl(251, 15%, 35%) |
| OKLCH | oklch(42.9% 0.045 292.9) |
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 #504B66 | 8.26:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #504B66 | 2.53:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #504B66 text on white | 8.26:1 | AAA | Lc 88.6 | Fine for body text |
| #504B66 text on black | 2.53:1 | Fails | Lc -13.6 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#D9D7E2
oklch(88.4% 0.015 294.4)
-
Step 300
300
#C1BED0
oklch(80.9% 0.025 293.5)
-
Step 400
400
#A19CB9
oklch(70.7% 0.042 293.2)
-
Step 500
500
#8A84A7
oklch(63.1% 0.052 292.7)
-
Step 600
600
#746D93
oklch(55.6% 0.059 292.8)
-
Step 700
700
#615B7D
oklch(49% 0.054 292.4)
-
Step 800
800 (this color)
#504B66
oklch(42.9% 0.045 292.9)
-
Step 900
900
#423E53
oklch(37.6% 0.036 293.3)
-
Step 950
950
#272530
oklch(27.1% 0.02 293.3)
#504B66 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) | #454F67 | 0.020 |
| Deuteranopia (no green cones) | #454E65 | 0.019 |
| Tritanopia (no blue cones) | #4C4F54 | 0.037 |
| Achromatopsia (no color) | #4E4E4E | 0.045 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504B66
#504B66
oklch(42.9% 0.045 292.9)
- #4F5235
#4F5235
oklch(42.8% 0.045 113.1)
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 #504B66, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.039
- Dusk #4E5481 ΔE 0.046
- YInMn Blue #415A77 ΔE 0.048
- Twilight #4E518B ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.063
- Dark Slate Gray #2F4F4F ΔE 0.067
- Light Navy Blue #2E5A88 ΔE 0.071
- Charcoal #264653 ΔE 0.072
Use #504B66 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.