#513773
Closest named color: Dark Slate Blue (#483D8B). oklch(39.6% 0.101 302), rgb(81, 55, 115).
Aa
White text reads best on this color (9.79:1).
About this color
#513773 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.101 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.044 away. White text reads best on it, at 9.79:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.14:1 |
| White text | 9.79:1 |
Values
| HEX | #513773 |
| RGB | rgb(81, 55, 115) |
| HSL | hsl(266, 35%, 33%) |
| OKLCH | oklch(39.6% 0.101 302) |
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 #513773 | 9.79:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #513773 | 2.14:1 | Fails | Lc 11.4 | Not readable |
| #513773 text on white | 9.79:1 | AAA | Lc 92.5 | Preferred for body text |
| #513773 text on black | 2.14:1 | Fails | Lc -9.9 | 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 900.
-
Step 50
50
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DED3F1
oklch(88.5% 0.042 302.2)
-
Step 300
300
#C9B6EA
oklch(81% 0.075 301.4)
-
Step 400
400
#AF8EDF
oklch(70.8% 0.12 302.2)
-
Step 500
500
#9B6FD6
oklch(63% 0.155 301.9)
-
Step 600
600
#8755C3
oklch(55.6% 0.167 302.2)
-
Step 700
700
#7244A9
oklch(49% 0.157 301.9)
-
Step 800
800
#5D3989
oklch(42.7% 0.13 301.9)
-
Step 900
900 (this color)
#513773
oklch(39.6% 0.101 302)
-
Step 950
950
#2C1E40
oklch(27% 0.063 301.3)
#513773 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) | #244375 | 0.071 |
| Deuteranopia (no green cones) | #2B4372 | 0.065 |
| Tritanopia (no blue cones) | #4B424F | 0.077 |
| Achromatopsia (no color) | #444444 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513773
#513773
oklch(39.6% 0.101 302)
- #3E4E00
#3E4E00
oklch(39.6% 0.096 122.1)
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 #513773, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.044
- Blueberry #464196 ΔE 0.063
- Rebecca Purple #663399 ΔE 0.074
- Twilight #4E518B ΔE 0.075
- Dusk #4E5481 ΔE 0.080
- Cobalt #1E488F ΔE 0.087
- Twilight Blue #0A437A ΔE 0.089
- Grape Purple #5D1451 ΔE 0.089
Use #513773 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.