#513978
Closest named color: Dark Slate Blue (#483D8B). oklch(40.3% 0.104 299.3), rgb(81, 57, 120).
Aa
White text reads best on this color (9.51:1).
About this color
#513978 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.104 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.035 away. White text reads best on it, at 9.51:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.104) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.20:1 |
| White text | 9.51:1 |
Values
| HEX | #513978 |
| RGB | rgb(81, 57, 120) |
| HSL | hsl(263, 36%, 35%) |
| OKLCH | oklch(40.3% 0.104 299.3) |
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 #513978 | 9.51:1 | AAA | Lc -96.1 | Preferred for body text |
| Black text on #513978 | 2.20:1 | Fails | Lc 12.1 | Not readable |
| #513978 text on white | 9.51:1 | AAA | Lc 91.8 | Preferred for body text |
| #513978 text on black | 2.20:1 | Fails | Lc -10.6 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#EBE7F4
oklch(93.5% 0.018 300.1)
-
Step 200
200
#DCD5ED
oklch(88.6% 0.033 299)
-
Step 300
300
#C6B8E3
oklch(80.8% 0.062 299.9)
-
Step 400
400
#A993D5
oklch(70.7% 0.097 299.2)
-
Step 500
500
#9577CA
oklch(63.2% 0.125 299.5)
-
Step 600
600
#7F5EB7
oklch(55.6% 0.137 299)
-
Step 700
700
#6C4D9D
oklch(49.1% 0.126 299.6)
-
Step 800
800 (this color)
#513978
oklch(40.3% 0.104 299.3)
-
Step 900
900
#483766
oklch(37.8% 0.08 299.2)
-
Step 950
950
#2A203C
oklch(26.9% 0.052 299.3)
#513978 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) | #23457A | 0.071 |
| Deuteranopia (no green cones) | #294576 | 0.066 |
| Tritanopia (no blue cones) | #494553 | 0.081 |
| Achromatopsia (no color) | #454545 | 0.105 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513978
#513978
oklch(40.3% 0.104 299.3)
- #434F00
#434F00
oklch(40.3% 0.095 119.2)
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 #513978, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.054
- Twilight #4E518B ΔE 0.067
- Rebecca Purple #663399 ΔE 0.068
- Dusk #4E5481 ΔE 0.074
- Cobalt #1E488F ΔE 0.081
- Twilight Blue #0A437A ΔE 0.087
- Dusk Blue #26538D ΔE 0.087
Use #513978 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.