#613573
Closest named color: Dark Slate Blue (#483D8B). oklch(41.1% 0.11 315.3), rgb(97, 53, 115).
Aa
White text reads best on this color (9.27:1).
About this color
#613573 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.110 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.061 away. White text reads best on it, at 9.27:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.27:1 |
Values
| HEX | #613573 |
| RGB | rgb(97, 53, 115) |
| HSL | hsl(283, 37%, 33%) |
| OKLCH | oklch(41.1% 0.11 315.3) |
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 #613573 | 9.27:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #613573 | 2.26:1 | Fails | Lc 12.9 | Not readable |
| #613573 text on white | 9.27:1 | AAA | Lc 91.1 | Preferred for body text |
| #613573 text on black | 2.26:1 | Fails | Lc -11.2 | 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
#F8F4F9
oklch(97.2% 0.008 319.4)
-
Step 100
100
#EFE6F3
oklch(93.6% 0.02 315.7)
-
Step 200
200
#E2D2EA
oklch(88.4% 0.037 314.6)
-
Step 300
300
#D1B5DE
oklch(81% 0.064 315.1)
-
Step 400
400
#B98DCD
oklch(70.8% 0.103 315)
-
Step 500
500
#A86FC0
oklch(63.2% 0.132 315.4)
-
Step 600
600
#9355AC
oklch(55.6% 0.144 315.5)
-
Step 700
700
#7D4593
oklch(49.1% 0.133 315.7)
-
Step 800
800 (this color)
#613573
oklch(41.1% 0.11 315.3)
-
Step 900
900
#533260
oklch(37.7% 0.085 315.9)
-
Step 950
950
#301E38
oklch(27% 0.053 314.9)
#613573 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) | #274575 | 0.097 |
| Deuteranopia (no green cones) | #354871 | 0.086 |
| Tritanopia (no blue cones) | #603F4F | 0.073 |
| Achromatopsia (no color) | #474747 | 0.111 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #613573
#613573
oklch(41.1% 0.11 315.3)
- #2D570E
#2D570E
oklch(41.1% 0.111 135.4)
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 #613573, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.061
- Rebecca Purple #663399 ΔE 0.064
- Blueberry #464196 ΔE 0.077
- Twilight #4E518B ΔE 0.080
- Grape Purple #5D1451 ΔE 0.083
- Dusk #4E5481 ΔE 0.085
- Rich Purple #720058 ΔE 0.088
- Velvet #750851 ΔE 0.089
Use #613573 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.