#513663
Closest named color: Dark Slate Blue (#483D8B). oklch(38.4% 0.081 310.7), rgb(81, 54, 99).
Aa
White text reads best on this color (10.20:1).
About this color
#513663 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.081 and its hue 311°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.069 away. White text reads best on it, at 10.20:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.081) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.05:1 |
| White text | 10.20:1 |
Values
| HEX | #513663 |
| RGB | rgb(81, 54, 99) |
| HSL | hsl(276, 29%, 30%) |
| OKLCH | oklch(38.4% 0.081 310.7) |
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 #513663 | 10.20:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #513663 | 2.05:1 | Fails | Lc 10.4 | Not readable |
| #513663 text on white | 10.20:1 | AAA | Lc 93.6 | Preferred for body text |
| #513663 text on black | 2.05:1 | Fails | Lc -9.0 | 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 900.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F3
oklch(93.6% 0.017 308.3)
-
Step 200
200
#E0D3EA
oklch(88.4% 0.034 310.7)
-
Step 300
300
#CDB6DE
oklch(80.9% 0.061 310.8)
-
Step 400
400
#B48FCD
oklch(70.6% 0.097 311.2)
-
Step 500
500
#A173C0
oklch(63.1% 0.122 310.7)
-
Step 600
600
#8C5AAD
oklch(55.7% 0.134 310.5)
-
Step 700
700
#774994
oklch(49.1% 0.125 310.9)
-
Step 800
800
#613C78
oklch(42.6% 0.104 311.2)
-
Step 900
900 (this color)
#513663
oklch(38.4% 0.081 310.7)
-
Step 950
950
#2E1F39
oklch(27% 0.051 309.8)
#513663 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) | #2D4065 | 0.062 |
| Deuteranopia (no green cones) | #334262 | 0.058 |
| Tritanopia (no blue cones) | #4F3D47 | 0.058 |
| Achromatopsia (no color) | #414141 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513663
#513663
oklch(38.4% 0.081 310.7)
- #344C1A
#344C1A
oklch(38.4% 0.081 130.9)
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 #513663, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.069
- Grape Purple #5D1451 ΔE 0.077
- Dark Grey Blue #29465B ΔE 0.079
- Purple Brown #673A3F ΔE 0.079
- Charcoal Grey #3C4142 ΔE 0.083
- Onyx #343A40 ΔE 0.085
- Blueberry #464196 ΔE 0.087
- Prussian Blue #1D3557 ΔE 0.088
Use #513663 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.