#503B73
Closest named color: Dark Slate Blue (#483D8B). oklch(40.2% 0.094 299.5), rgb(80, 59, 115).
Aa
White text reads best on this color (9.48:1).
About this color
#503B73 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.094 and its hue 299°. 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 9.48:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.094) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #503B73 |
| RGB | rgb(80, 59, 115) |
| HSL | hsl(263, 32%, 34%) |
| OKLCH | oklch(40.2% 0.094 299.5) |
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 #503B73 | 9.48:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #503B73 | 2.21:1 | Fails | Lc 12.2 | Not readable |
| #503B73 text on white | 9.48:1 | AAA | Lc 91.8 | Preferred for body text |
| #503B73 text on black | 2.21:1 | Fails | Lc -10.6 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DCD5EB
oklch(88.5% 0.031 300.3)
-
Step 300
300
#C5B9E0
oklch(80.8% 0.056 299.2)
-
Step 400
400
#A894D0
oklch(70.6% 0.089 299.4)
-
Step 500
500
#9379C3
oklch(63% 0.112 299.4)
-
Step 600
600
#7E61B0
oklch(55.6% 0.122 299.3)
-
Step 700
700
#6B5097
oklch(49.2% 0.113 299.8)
-
Step 800
800 (this color)
#503B73
oklch(40.2% 0.094 299.5)
-
Step 900
900
#473863
oklch(37.7% 0.074 298.9)
-
Step 950
950
#2A213A
oklch(27% 0.047 299.9)
#503B73 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) | #2A4675 | 0.061 |
| Deuteranopia (no green cones) | #2F4572 | 0.056 |
| Tritanopia (no blue cones) | #494551 | 0.073 |
| Achromatopsia (no color) | #464646 | 0.094 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503B73
#503B73
oklch(40.2% 0.094 299.5)
- #434F02
#434F02
oklch(40.3% 0.094 119.3)
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 #503B73, 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 0.066
- Dusk #4E5481 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.077
- Cobalt #1E488F ΔE 0.081
- Dusty Grape #545775 ΔE 0.082
- Dark Grey Blue #29465B ΔE 0.082
Use #503B73 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.