#504E78
Closest named color: Dusk (#4E5481). oklch(44.4% 0.068 285.4), rgb(80, 78, 120).
Aa
White text reads best on this color (7.77:1).
About this color
#504E78 is a dark, muted purple. In OKLCH its lightness is 44%, its chroma 0.068 and its hue 285°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.020 away. White text reads best on it, at 7.77:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | muted (0.068) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.70:1 |
| White text | 7.77:1 |
Values
| HEX | #504E78 |
| RGB | rgb(80, 78, 120) |
| HSL | hsl(243, 21%, 39%) |
| OKLCH | oklch(44.4% 0.068 285.4) |
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 #504E78 | 7.77:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #504E78 | 2.70:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #504E78 text on white | 7.77:1 | AAA | Lc 87.0 | Fine for body text |
| #504E78 text on black | 2.70:1 | Fails | Lc -15.1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F1
oklch(93.6% 0.011 286.2)
-
Step 200
200
#D7D7E8
oklch(88.4% 0.023 285.9)
-
Step 300
300
#BDBDDA
oklch(80.8% 0.041 285.5)
-
Step 400
400
#9C9BC7
oklch(70.6% 0.064 285.7)
-
Step 500
500
#8482B9
oklch(63% 0.082 285.4)
-
Step 600
600
#6E6BA5
oklch(55.5% 0.089 285.5)
-
Step 700
700
#5C598E
oklch(49% 0.084 285.4)
-
Step 800
800 (this color)
#504E78
oklch(44.4% 0.068 285.4)
-
Step 900
900
#3F3D5D
oklch(37.6% 0.054 286.3)
-
Step 950
950
#252436
oklch(27% 0.033 286.5)
#504E78 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) | #42547A | 0.025 |
| Deuteranopia (no green cones) | #415177 | 0.023 |
| Tritanopia (no blue cones) | #46565D | 0.060 |
| Achromatopsia (no color) | #525252 | 0.069 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504E78
#504E78
oklch(44.4% 0.068 285.4)
- #595626
#595626
oklch(44.5% 0.068 105.6)
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 #504E78, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.020
- Dusty Grape #545775 ΔE 0.030
- Twilight #4E518B ΔE 0.031
- YInMn Blue #415A77 ΔE 0.040
- Light Navy Blue #2E5A88 ΔE 0.053
- Denim Blue #3B5B92 ΔE 0.054
- Dusky Blue #475F94 ΔE 0.059
- Dusk Blue #26538D ΔE 0.059
Use #504E78 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.