#505181
Closest named color: Dusk (#4E5481). oklch(45.6% 0.078 281.9), rgb(80, 81, 129).
Aa
White text reads best on this color (7.40:1).
About this color
#505181 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.078 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.009 away. White text reads best on it, at 7.40:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.83:1 |
| White text | 7.40:1 |
Values
| HEX | #505181 |
| RGB | rgb(80, 81, 129) |
| HSL | hsl(239, 23%, 41%) |
| OKLCH | oklch(45.6% 0.078 281.9) |
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 #505181 | 7.40:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #505181 | 2.83:1 | Fails | Lc 18.3 | Dividers and decoration only |
| #505181 text on white | 7.40:1 | AAA | Lc 85.7 | Fine for body text |
| #505181 text on black | 2.83:1 | Fails | Lc -16.4 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E9F3
oklch(93.6% 0.013 281.6)
-
Step 200
200
#D6D7EA
oklch(88.4% 0.026 283.4)
-
Step 300
300
#BBBEDE
oklch(81% 0.045 281.1)
-
Step 400
400
#999CCD
oklch(70.8% 0.071 281.7)
-
Step 500
500
#8082C0
oklch(63% 0.093 282)
-
Step 600
600
#6A6BAD
oklch(55.6% 0.101 281.9)
-
Step 700
700
#595994
oklch(49.1% 0.093 282.4)
-
Step 800
800 (this color)
#505181
oklch(45.6% 0.078 281.9)
-
Step 900
900
#3C3D61
oklch(37.6% 0.061 281.8)
-
Step 950
950
#232439
oklch(27% 0.039 281.4)
#505181 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) | #425783 | 0.024 |
| Deuteranopia (no green cones) | #3F5480 | 0.025 |
| Tritanopia (no blue cones) | #425A63 | 0.067 |
| Achromatopsia (no color) | #555555 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #505181
#505181
oklch(45.6% 0.078 281.9)
- #60581F
#60581F
oklch(45.6% 0.077 101.3)
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 #505181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.009
- Twilight #4E518B ΔE 0.017
- Dusty Grape #545775 ΔE 0.031
- YInMn Blue #415A77 ΔE 0.040
- Denim Blue #3B5B92 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.046
- Dusk Blue #26538D ΔE 0.053
Use #505181 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.