#513879
Closest named color: Dark Slate Blue (#483D8B). oklch(40.1% 0.108 299.3), rgb(81, 56, 121).
Aa
White text reads best on this color (9.58:1).
About this color
#513879 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.108 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 0.034 away. White text reads best on it, at 9.58:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.108) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.19:1 |
| White text | 9.58:1 |
Values
| HEX | #513879 |
| RGB | rgb(81, 56, 121) |
| HSL | hsl(263, 37%, 35%) |
| OKLCH | oklch(40.1% 0.108 299.3) |
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 #513879 | 9.58:1 | AAA | Lc -96.2 | Preferred for body text |
| Black text on #513879 | 2.19:1 | Fails | Lc 12.0 | Not readable |
| #513879 text on white | 9.58:1 | AAA | Lc 92.0 | Preferred for body text |
| #513879 text on black | 2.19:1 | Fails | Lc -10.4 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#ECE7F8
oklch(93.7% 0.023 299.4)
-
Step 200
200
#DDD3F3
oklch(88.5% 0.045 299.7)
-
Step 300
300
#C8B6EE
oklch(81% 0.08 299.3)
-
Step 400
400
#AC8DE5
oklch(70.6% 0.129 299.3)
-
Step 500
500
#996EDE
oklch(63.1% 0.166 299.3)
-
Step 600
600
#8453CB
oklch(55.5% 0.179 299.3)
-
Step 700
700
#7043B0
oklch(49.1% 0.167 299.2)
-
Step 800
800
#5B388E
oklch(42.7% 0.137 299.3)
-
Step 900
900 (this color)
#513879
oklch(40.1% 0.108 299.3)
-
Step 950
950
#2B1D43
oklch(26.9% 0.07 298.6)
#513879 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) | #21457B | 0.073 |
| Deuteranopia (no green cones) | #274577 | 0.069 |
| Tritanopia (no blue cones) | #494453 | 0.082 |
| Achromatopsia (no color) | #454545 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #513879
#513879
oklch(40.1% 0.108 299.3)
- #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 #513879, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.034
- Blueberry #464196 ΔE 0.053
- Rebecca Purple #663399 ΔE 0.066
- Twilight #4E518B ΔE 0.069
- Dusk #4E5481 ΔE 0.076
- Cobalt #1E488F ΔE 0.081
- Twilight Blue #0A437A ΔE 0.088
- Dusk Blue #26538D ΔE 0.089
Use #513879 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.