#513B68
Closest named color: Dark Slate Blue (#483D8B). oklch(39.7% 0.078 305.6), rgb(81, 59, 104).
Aa
White text reads best on this color (9.65:1).
About this color
#513B68 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.078 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.060 away. White text reads best on it, at 9.65:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.078) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.17:1 |
| White text | 9.65:1 |
Values
| HEX | #513B68 |
| RGB | rgb(81, 59, 104) |
| HSL | hsl(269, 28%, 32%) |
| OKLCH | oklch(39.7% 0.078 305.6) |
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 #513B68 | 9.65:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #513B68 | 2.17:1 | Fails | Lc 11.7 | Not readable |
| #513B68 text on white | 9.65:1 | AAA | Lc 92.3 | Preferred for body text |
| #513B68 text on black | 2.17:1 | Fails | Lc -10.2 | 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 900.
-
Step 50
50
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DED4EB
oklch(88.5% 0.033 305.3)
-
Step 300
300
#CAB8DF
oklch(81% 0.057 306)
-
Step 400
400
#AF92CF
oklch(70.8% 0.093 305.9)
-
Step 500
500
#9B75C3
oklch(63% 0.12 305.6)
-
Step 600
600
#865DAF
oklch(55.6% 0.129 305.7)
-
Step 700
700
#724C97
oklch(49.2% 0.122 305.8)
-
Step 800
800
#5C3F7A
oklch(42.7% 0.099 305.3)
-
Step 900
900 (this color)
#513B68
oklch(39.7% 0.078 305.6)
-
Step 950
950
#2C203A
oklch(27% 0.049 304.5)
#513B68 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) | #31446A | 0.054 |
| Deuteranopia (no green cones) | #364567 | 0.050 |
| Tritanopia (no blue cones) | #4E424C | 0.058 |
| Achromatopsia (no color) | #454545 | 0.078 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513B68
#513B68
oklch(39.7% 0.078 305.6)
- #3D4E1B
#3D4E1B
oklch(39.7% 0.078 125.3)
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 #513B68, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.060
- Dark Grey Blue #29465B ΔE 0.074
- Dusk #4E5481 ΔE 0.074
- Twilight #4E518B ΔE 0.075
- Blueberry #464196 ΔE 0.078
- Purple Brown #673A3F ΔE 0.080
- Dusty Grape #545775 ΔE 0.080
- Charcoal Grey #3C4142 ΔE 0.083
Use #513B68 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.