#515181
Closest named color: Dusk (#4E5481). oklch(45.7% 0.078 282.9), rgb(81, 81, 129).
Aa
White text reads best on this color (7.38:1).
About this color
#515181 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.078 and its hue 283°. 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 7.38:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.078) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.84:1 |
| White text | 7.38:1 |
Values
| HEX | #515181 |
| RGB | rgb(81, 81, 129) |
| HSL | hsl(240, 23%, 41%) |
| OKLCH | oklch(45.7% 0.078 282.9) |
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 #515181 | 7.38:1 | AAA | Lc -90.5 | Preferred for body text |
| Black text on #515181 | 2.84:1 | Fails | Lc 18.4 | Dividers and decoration only |
| #515181 text on white | 7.38:1 | AAA | Lc 85.6 | Fine for body text |
| #515181 text on black | 2.84:1 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
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
#BCBDDE
oklch(80.8% 0.046 283.9)
-
Step 400
400
#9A9BCD
oklch(70.7% 0.073 283.5)
-
Step 500
500
#8182C0
oklch(63.1% 0.093 282.7)
-
Step 600
600
#6B6BAC
oklch(55.6% 0.1 282.7)
-
Step 700
700
#5A5994
oklch(49.2% 0.093 283.2)
-
Step 800
800 (this color)
#515181
oklch(45.7% 0.078 282.9)
-
Step 900
900
#3D3D61
oklch(37.7% 0.061 283.1)
-
Step 950
950
#242439
oklch(27.1% 0.039 283.5)
#515181 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 | 0.025 |
| Deuteranopia (no green cones) | #405480 | 0.025 |
| Tritanopia (no blue cones) | #445A63 | 0.067 |
| Achromatopsia (no color) | #565656 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #515181
#515181
oklch(45.7% 0.078 282.9)
- #5F591F
#5F591F
oklch(45.7% 0.078 103.4)
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 #515181, 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 0.041
- Denim Blue #3B5B92 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.045
- Light Navy Blue #2E5A88 ΔE 0.047
- Dusk Blue #26538D ΔE 0.054
Use #515181 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.