#503F72
Closest named color: Dark Slate Blue (#483D8B). oklch(40.9% 0.085 297.9), rgb(80, 63, 114).
Aa
White text reads best on this color (9.15:1).
About this color
#503F72 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.085 and its hue 298°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.045 away. White text reads best on it, at 9.15:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.085) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.29:1 |
| White text | 9.15:1 |
Values
| HEX | #503F72 |
| RGB | rgb(80, 63, 114) |
| HSL | hsl(260, 29%, 35%) |
| OKLCH | oklch(40.9% 0.085 297.9) |
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 #503F72 | 9.15:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #503F72 | 2.29:1 | Fails | Lc 13.0 | Not readable |
| #503F72 text on white | 9.15:1 | AAA | Lc 91.0 | Preferred for body text |
| #503F72 text on black | 2.29:1 | Fails | Lc -11.4 | 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 800.
-
Step 50
50
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EBE8F2
oklch(93.6% 0.014 299.8)
-
Step 200
200
#DBD6E9
oklch(88.6% 0.026 297.9)
-
Step 300
300
#C4BADD
oklch(80.8% 0.05 298.3)
-
Step 400
400
#A696CC
oklch(70.6% 0.079 297.9)
-
Step 500
500
#917CBF
oklch(63.2% 0.101 297.9)
-
Step 600
600
#7B64AB
oklch(55.6% 0.11 297.6)
-
Step 700
700
#685393
oklch(49.2% 0.102 297.7)
-
Step 800
800 (this color)
#503F72
oklch(40.9% 0.085 297.9)
-
Step 900
900
#463960
oklch(37.6% 0.067 298.5)
-
Step 950
950
#292238
oklch(27% 0.041 298.2)
#503F72 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) | #304874 | 0.052 |
| Deuteranopia (no green cones) | #344771 | 0.047 |
| Tritanopia (no blue cones) | #494853 | 0.067 |
| Achromatopsia (no color) | #484848 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503F72
#503F72
oklch(40.9% 0.085 297.9)
- #465011
#465011
oklch(40.9% 0.085 118.3)
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 #503F72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Twilight #4E518B ΔE 0.058
- Dusk #4E5481 ΔE 0.060
- Blueberry #464196 ΔE 0.061
- Dusty Grape #545775 ΔE 0.070
- Dark Grey Blue #29465B ΔE 0.077
- YInMn Blue #415A77 ΔE 0.079
- Dusk Blue #26538D ΔE 0.079
Use #503F72 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.