#504B72
Closest named color: Dusk (#4E5481). oklch(43.5% 0.064 289.3), rgb(80, 75, 114).
Aa
White text reads best on this color (8.10:1).
About this color
#504B72 is a dark, muted purple. In OKLCH its lightness is 43%, its chroma 0.064 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.031 away. White text reads best on it, at 8.10:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | muted (0.064) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.59:1 |
| White text | 8.10:1 |
Values
| HEX | #504B72 |
| RGB | rgb(80, 75, 114) |
| HSL | hsl(248, 21%, 37%) |
| OKLCH | oklch(43.5% 0.064 289.3) |
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 #504B72 | 8.10:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #504B72 | 2.59:1 | Fails | Lc 16.0 | Dividers and decoration only |
| #504B72 text on white | 8.10:1 | AAA | Lc 88.0 | Fine for body text |
| #504B72 text on black | 2.59:1 | Fails | Lc -14.1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F1
oklch(93.6% 0.011 286.2)
-
Step 200
200
#D8D7E6
oklch(88.4% 0.02 289)
-
Step 300
300
#BFBDD8
oklch(80.9% 0.038 288.9)
-
Step 400
400
#9F9BC4
oklch(70.7% 0.059 289.3)
-
Step 500
500
#8882B5
oklch(63.1% 0.076 289.4)
-
Step 600
600
#726BA1
oklch(55.6% 0.083 289.4)
-
Step 700
700
#60598A
oklch(49.1% 0.078 289.8)
-
Step 800
800 (this color)
#504B72
oklch(43.5% 0.064 289.3)
-
Step 900
900
#413D5A
oklch(37.7% 0.049 290.1)
-
Step 950
950
#262435
oklch(27% 0.031 289.5)
#504B72 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) | #405074 | 0.026 |
| Deuteranopia (no green cones) | #404F71 | 0.026 |
| Tritanopia (no blue cones) | #485259 | 0.055 |
| Achromatopsia (no color) | #505050 | 0.064 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #504B72
#504B72
oklch(43.5% 0.064 289.3)
- #535428
#535428
oklch(43.4% 0.064 110)
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 #504B72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.031
- Dusty Grape #545775 ΔE 0.036
- Twilight #4E518B ΔE 0.041
- YInMn Blue #415A77 ΔE 0.046
- Light Navy Blue #2E5A88 ΔE 0.061
- Denim Blue #3B5B92 ΔE 0.064
- Dark Slate Blue #483D8B ΔE 0.065
- Dusk Blue #26538D ΔE 0.065
Use #504B72 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.