#503D71
Closest named color: Dark Slate Blue (#483D8B). oklch(40.5% 0.087 299.3), rgb(80, 61, 113).
Aa
White text reads best on this color (9.34:1).
About this color
#503D71 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.087 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 0.046 away. White text reads best on it, at 9.34:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.087) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #503D71 |
| RGB | rgb(80, 61, 113) |
| HSL | hsl(262, 30%, 34%) |
| OKLCH | oklch(40.5% 0.087 299.3) |
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 #503D71 | 9.34:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #503D71 | 2.24:1 | Fails | Lc 12.5 | Not readable |
| #503D71 text on white | 9.34:1 | AAA | Lc 91.5 | Preferred for body text |
| #503D71 text on black | 2.24:1 | Fails | Lc -10.9 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#EBE8F3
oklch(93.7% 0.015 298.6)
-
Step 200
200
#DBD5EA
oklch(88.4% 0.029 298.8)
-
Step 300
300
#C5BADD
oklch(80.9% 0.05 299.6)
-
Step 400
400
#A895CD
oklch(70.7% 0.083 299.8)
-
Step 500
500
#937BBF
oklch(63.2% 0.103 299.7)
-
Step 600
600
#7D63AC
oklch(55.6% 0.113 299.1)
-
Step 700
700
#6A5293
oklch(49.2% 0.104 299.6)
-
Step 800
800 (this color)
#503D71
oklch(40.5% 0.087 299.3)
-
Step 900
900
#473960
oklch(37.7% 0.067 299.7)
-
Step 950
950
#292238
oklch(27% 0.041 298.2)
#503D71 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) | #2E4773 | 0.056 |
| Deuteranopia (no green cones) | #324670 | 0.051 |
| Tritanopia (no blue cones) | #4A4651 | 0.068 |
| Achromatopsia (no color) | #474747 | 0.087 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503D71
#503D71
oklch(40.5% 0.087 299.3)
- #444F0E
#444F0E
oklch(40.4% 0.087 119)
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 #503D71, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.046
- Blueberry #464196 ΔE 0.063
- Twilight #4E518B ΔE 0.063
- Dusk #4E5481 ΔE 0.065
- Dusty Grape #545775 ΔE 0.076
- Dark Grey Blue #29465B ΔE 0.078
- Cobalt #1E488F ΔE 0.081
- Rebecca Purple #663399 ΔE 0.082
Use #503D71 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.