#503F6B
Closest named color: Dark Slate Blue (#483D8B). oklch(40.5% 0.075 300.9), rgb(80, 63, 107).
Aa
White text reads best on this color (9.27:1).
About this color
#503F6B is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.075 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 9.27:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.075) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #503F6B |
| RGB | rgb(80, 63, 107) |
| HSL | hsl(263, 26%, 33%) |
| OKLCH | oklch(40.5% 0.075 300.9) |
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 #503F6B | 9.27:1 | AAA | Lc -95.7 | Preferred for body text |
| Black text on #503F6B | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #503F6B text on white | 9.27:1 | AAA | Lc 91.3 | Preferred for body text |
| #503F6B text on black | 2.26:1 | Fails | Lc -11.0 | 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
#EBE8F1
oklch(93.6% 0.012 301.3)
-
Step 200
200
#DBD6E7
oklch(88.5% 0.024 299.3)
-
Step 300
300
#C5BBD9
oklch(81% 0.043 300.6)
-
Step 400
400
#A897C6
oklch(70.8% 0.07 301.2)
-
Step 500
500
#927DB7
oklch(63.1% 0.088 300.5)
-
Step 600
600
#7D65A3
oklch(55.5% 0.097 301.1)
-
Step 700
700
#69548C
oklch(49.1% 0.09 300.4)
-
Step 800
800 (this color)
#503F6B
oklch(40.5% 0.075 300.9)
-
Step 900
900
#473A5C
oklch(37.7% 0.059 301.2)
-
Step 950
950
#292236
oklch(26.9% 0.038 300)
#503F6B 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) | #34476D | 0.047 |
| Deuteranopia (no green cones) | #37476A | 0.044 |
| Tritanopia (no blue cones) | #4B4650 | 0.057 |
| Achromatopsia (no color) | #474747 | 0.075 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503F6B
#503F6B
oklch(40.5% 0.075 300.9)
- #434F1D
#434F1D
oklch(40.5% 0.074 121.1)
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 #503F6B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Dusk #4E5481 ΔE 0.063
- Twilight #4E518B ΔE 0.065
- Dusty Grape #545775 ΔE 0.070
- Dark Grey Blue #29465B ΔE 0.070
- Blueberry #464196 ΔE 0.073
- YInMn Blue #415A77 ΔE 0.078
- Charcoal #264653 ΔE 0.082
Use #503F6B 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.