#503591
Closest named color: Dark Slate Blue (#483D8B). oklch(41.3% 0.145 292.4), rgb(80, 53, 145).
Aa
White text reads best on this color (9.29:1).
About this color
#503591 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.145 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.025 away. White text reads best on it, at 9.29:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.25:1 |
| White text | 9.29:1 |
Values
| HEX | #503591 |
| RGB | rgb(80, 53, 145) |
| HSL | hsl(258, 46%, 39%) |
| OKLCH | oklch(41.3% 0.145 292.4) |
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 #503591 | 9.29:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #503591 | 2.25:1 | Fails | Lc 12.9 | Not readable |
| #503591 text on white | 9.29:1 | AAA | Lc 91.0 | Preferred for body text |
| #503591 text on black | 2.25:1 | Fails | Lc -11.3 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7F9
oklch(93.6% 0.024 293.6)
-
Step 200
200
#D9D4F6
oklch(88.5% 0.047 292.2)
-
Step 300
300
#C2B7F3
oklch(80.9% 0.084 292.8)
-
Step 400
400
#A38FED
oklch(70.6% 0.136 292.3)
-
Step 500
500
#8F70E7
oklch(63% 0.173 292.7)
-
Step 600
600
#7A55D5
oklch(55.5% 0.188 292.5)
-
Step 700
700
#6745B9
oklch(49.2% 0.174 292.3)
-
Step 800
800 (this color)
#503591
oklch(41.3% 0.145 292.4)
-
Step 900
900
#453277
oklch(37.6% 0.113 292.8)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#503591 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) | #004894 | 0.089 |
| Deuteranopia (no green cones) | #00458F | 0.089 |
| Tritanopia (no blue cones) | #3D4A5E | 0.115 |
| Achromatopsia (no color) | #474747 | 0.145 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503591
#503591
oklch(41.3% 0.145 292.4)
- #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 #503591, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.025
- Blueberry #464196 ΔE 0.032
- Rebecca Purple #663399 ΔE 0.043
- Chrysanthemum #560BAD ΔE 0.071
- Imperial Purple #480CA8 ΔE 0.073
- Twilight #4E518B ΔE 0.074
- Cobalt #1E488F ΔE 0.077
- Sapphire #2138AB ΔE 0.080
Use #503591 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.