#503181
Closest named color: Dark Slate Blue (#483D8B). oklch(39.4% 0.13 298.1), rgb(80, 49, 129).
Aa
White text reads best on this color (10.01:1).
About this color
#503181 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.130 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.034 away. White text reads best on it, at 10.01:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.130) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.09:1 |
| White text | 10.01:1 |
Values
| HEX | #503181 |
| RGB | rgb(80, 49, 129) |
| HSL | hsl(263, 45%, 35%) |
| OKLCH | oklch(39.4% 0.13 298.1) |
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 #503181 | 10.01:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #503181 | 2.09:1 | Fails | Lc 11.1 | Not readable |
| #503181 text on white | 10.01:1 | AAA | Lc 92.9 | Preferred for body text |
| #503181 text on black | 2.09:1 | Fails | Lc -9.6 | 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 900.
-
Step 50
50
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE6FB
oklch(93.6% 0.029 298.9)
-
Step 200
200
#DDD2F9
oklch(88.5% 0.054 298.2)
-
Step 300
300
#C8B3F8
oklch(80.9% 0.098 298.1)
-
Step 400
400
#AD89F4
oklch(70.8% 0.155 297.8)
-
Step 500
500
#9A66EF
oklch(63% 0.198 298)
-
Step 600
600
#8648DE
oklch(55.6% 0.216 297.9)
-
Step 700
700
#7238C1
oklch(49.2% 0.201 297.9)
-
Step 800
800
#5D309C
oklch(42.8% 0.166 298.1)
-
Step 900
900 (this color)
#503181
oklch(39.4% 0.13 298.1)
-
Step 950
950
#2C1B49
oklch(27.1% 0.083 297.7)
#503181 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) | #004284 | 0.095 |
| Deuteranopia (no green cones) | #12417F | 0.088 |
| Tritanopia (no blue cones) | #454254 | 0.099 |
| Achromatopsia (no color) | #424242 | 0.130 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503181
#503181
oklch(39.4% 0.13 298.1)
- #424C00
#424C00
oklch(39.4% 0.092 118)
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 #503181, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.051
- Rebecca Purple #663399 ΔE 0.057
- Indigo #4B0082 ΔE 0.075
- Twilight #4E518B ΔE 0.083
- Imperial Purple #480CA8 ΔE 0.085
- Cobalt #1E488F ΔE 0.086
- Royal Purple #4B006E ΔE 0.086
Use #503181 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.