#503A73
Closest named color: Dark Slate Blue (#483D8B). oklch(40% 0.095 299.9), rgb(80, 58, 115).
Aa
White text reads best on this color (9.57:1).
About this color
#503A73 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.095 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.042 away. White text reads best on it, at 9.57:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #503A73 |
| RGB | rgb(80, 58, 115) |
| HSL | hsl(263, 33%, 34%) |
| OKLCH | oklch(40% 0.095 299.9) |
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 #503A73 | 9.57:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #503A73 | 2.19:1 | Fails | Lc 11.9 | Not readable |
| #503A73 text on white | 9.57:1 | AAA | Lc 92.0 | Preferred for body text |
| #503A73 text on black | 2.19:1 | Fails | Lc -10.4 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD4F0
oklch(88.6% 0.039 300.2)
-
Step 300
300
#C7B7E9
oklch(80.9% 0.071 299.4)
-
Step 400
400
#AB90DD
oklch(70.7% 0.113 299.6)
-
Step 500
500
#9872D4
oklch(63.1% 0.147 300.1)
-
Step 600
600
#8358C1
oklch(55.6% 0.16 300.2)
-
Step 700
700
#6F48A7
oklch(49.2% 0.148 299.9)
-
Step 800
800
#5A3C87
oklch(42.8% 0.122 299.7)
-
Step 900
900 (this color)
#503A73
oklch(40% 0.095 299.9)
-
Step 950
950
#2B1F3F
oklch(27% 0.059 299.7)
#503A73 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) | #284575 | 0.064 |
| Deuteranopia (no green cones) | #2E4572 | 0.058 |
| Tritanopia (no blue cones) | #494451 | 0.073 |
| Achromatopsia (no color) | #454545 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503A73
#503A73
oklch(40% 0.095 299.9)
- #424F00
#424F00
oklch(40.2% 0.095 119.9)
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 #503A73, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.042
- Blueberry #464196 ΔE 0.060
- Twilight #4E518B ΔE 0.068
- Dusk #4E5481 ΔE 0.072
- Rebecca Purple #663399 ΔE 0.077
- Cobalt #1E488F ΔE 0.082
- Dark Grey Blue #29465B ΔE 0.084
- Dusty Grape #545775 ΔE 0.084
Use #503A73 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.