#503373
Closest named color: Dark Slate Blue (#483D8B). oklch(38.7% 0.108 302.6), rgb(80, 51, 115).
Aa
White text reads best on this color (10.18:1).
About this color
#503373 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.108 and its hue 303°. 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 10.18:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.06:1 |
| White text | 10.18:1 |
Values
| HEX | #503373 |
| RGB | rgb(80, 51, 115) |
| HSL | hsl(267, 39%, 33%) |
| OKLCH | oklch(38.7% 0.108 302.6) |
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 #503373 | 10.18:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #503373 | 2.06:1 | Fails | Lc 10.5 | Not readable |
| #503373 text on white | 10.18:1 | AAA | Lc 93.4 | Preferred for body text |
| #503373 text on black | 2.06:1 | Fails | Lc -9.1 | 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
#F7F4FC
oklch(97.2% 0.011 303.1)
-
Step 100
100
#EDE6F7
oklch(93.5% 0.024 304.5)
-
Step 200
200
#DFD3F2
oklch(88.6% 0.044 303.1)
-
Step 300
300
#CAB5EC
oklch(80.9% 0.079 302.1)
-
Step 400
400
#B08CE3
oklch(70.7% 0.129 302.3)
-
Step 500
500
#9E6CDB
oklch(63.1% 0.166 302.7)
-
Step 600
600
#8951C8
oklch(55.6% 0.18 302.6)
-
Step 700
700
#7441AD
oklch(49.1% 0.167 302.4)
-
Step 800
800
#5F368C
oklch(42.7% 0.139 302.9)
-
Step 900
900 (this color)
#503373
oklch(38.7% 0.108 302.6)
-
Step 950
950
#2D1D42
oklch(27.1% 0.068 302)
#503373 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) | #1C4175 | 0.080 |
| Deuteranopia (no green cones) | #254171 | 0.073 |
| Tritanopia (no blue cones) | #493F4E | 0.080 |
| Achromatopsia (no color) | #414141 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503373
#503373
oklch(38.7% 0.108 302.6)
- #3B4C00
#3B4C00
oklch(38.8% 0.095 123)
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 #503373, 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 0.066
- Rebecca Purple #663399 ΔE 0.075
- Grape Purple #5D1451 ΔE 0.083
- Twilight #4E518B ΔE 0.084
- Indigo #4B0082 ΔE 0.086
- Royal Purple #4B006E ΔE 0.088
- Dusk #4E5481 ΔE 0.090
Use #503373 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.