#503B85
Closest named color: Dark Slate Blue (#483D8B). oklch(41.4% 0.119 293.6), rgb(80, 59, 133).
Aa
White text reads best on this color (9.10:1).
About this color
#503B85 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.119 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.017 away. White text reads best on it, at 9.10:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.30:1 |
| White text | 9.10:1 |
Values
| HEX | #503B85 |
| RGB | rgb(80, 59, 133) |
| HSL | hsl(257, 39%, 38%) |
| OKLCH | oklch(41.4% 0.119 293.6) |
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 #503B85 | 9.10:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #503B85 | 2.30:1 | Fails | Lc 13.2 | Not readable |
| #503B85 text on white | 9.10:1 | AAA | Lc 90.7 | Preferred for body text |
| #503B85 text on black | 2.30:1 | Fails | Lc -11.6 | 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 800.
-
Step 50
50
#F5F4FB
oklch(97% 0.009 292.8)
-
Step 100
100
#EAE8F6
oklch(93.7% 0.019 292.6)
-
Step 200
200
#DAD5F1
oklch(88.6% 0.038 293.8)
-
Step 300
300
#C2B9EA
oklch(81% 0.069 293.2)
-
Step 400
400
#A493E0
oklch(70.8% 0.112 293.5)
-
Step 500
500
#8F76D7
oklch(63.1% 0.143 293.8)
-
Step 600
600
#7A5DC4
oklch(55.7% 0.155 293.7)
-
Step 700
700
#674CA9
oklch(49.2% 0.143 293.9)
-
Step 800
800 (this color)
#503B85
oklch(41.4% 0.119 293.6)
-
Step 900
900
#45366E
oklch(37.8% 0.094 293.8)
-
Step 950
950
#282040
oklch(27% 0.059 293.6)
#503B85 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) | #1A4988 | 0.074 |
| Deuteranopia (no green cones) | #1F4783 | 0.071 |
| Tritanopia (no blue cones) | #434A5A | 0.095 |
| Achromatopsia (no color) | #484848 | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503B85
#503B85
oklch(41.4% 0.119 293.6)
- #4C5000
#4C5000
oklch(41.4% 0.092 113.1)
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 #503B85, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.017
- Blueberry #464196 ΔE 0.034
- Rebecca Purple #663399 ΔE 0.054
- Twilight #4E518B ΔE 0.058
- Dusk #4E5481 ΔE 0.070
- Cobalt #1E488F ΔE 0.071
- Dusk Blue #26538D ΔE 0.079
- Light Navy #155084 ΔE 0.085
Use #503B85 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.