#503F7D
Closest named color: Dark Slate Blue (#483D8B). oklch(41.6% 0.101 294.2), rgb(80, 63, 125).
Aa
White text reads best on this color (8.94:1).
About this color
#503F7D is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.101 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.029 away. White text reads best on it, at 8.94:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #503F7D |
| RGB | rgb(80, 63, 125) |
| HSL | hsl(256, 33%, 37%) |
| OKLCH | oklch(41.6% 0.101 294.2) |
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 #503F7D | 8.94:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #503F7D | 2.34:1 | Fails | Lc 13.6 | Not readable |
| #503F7D text on white | 8.94:1 | AAA | Lc 90.4 | Preferred for body text |
| #503F7D text on black | 2.34:1 | Fails | Lc -11.9 | 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
#F5F4FA
oklch(97% 0.008 293.9)
-
Step 100
100
#EAE8F5
oklch(93.6% 0.018 293.1)
-
Step 200
200
#DAD5ED
oklch(88.4% 0.033 295.3)
-
Step 300
300
#C2BAE4
oklch(80.9% 0.059 293.8)
-
Step 400
400
#A495D6
oklch(70.7% 0.095 294.4)
-
Step 500
500
#8E7ACB
oklch(63.1% 0.12 294)
-
Step 600
600
#7961B8
oklch(55.6% 0.132 294.4)
-
Step 700
700
#66509E
oklch(49.1% 0.122 294.5)
-
Step 800
800 (this color)
#503F7D
oklch(41.6% 0.101 294.2)
-
Step 900
900
#443867
oklch(37.6% 0.079 294)
-
Step 950
950
#28213C
oklch(26.9% 0.05 294.8)
#503F7D 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) | #294A7F | 0.060 |
| Deuteranopia (no green cones) | #2C487C | 0.056 |
| Tritanopia (no blue cones) | #454B58 | 0.082 |
| Achromatopsia (no color) | #494949 | 0.102 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #503F7D
#503F7D
oklch(41.6% 0.101 294.2)
- #4C5100
#4C5100
oklch(41.6% 0.093 113.8)
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 #503F7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.029
- Blueberry #464196 ΔE 0.044
- Twilight #4E518B ΔE 0.051
- Dusk #4E5481 ΔE 0.058
- Rebecca Purple #663399 ΔE 0.067
- Cobalt #1E488F ΔE 0.071
- Dusk Blue #26538D ΔE 0.073
- Dusty Grape #545775 ΔE 0.075
Use #503F7D 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.