#63518B
Closest named color: Twilight (#4E518B). oklch(47.9% 0.093 297), rgb(99, 81, 139).
Aa
White text reads best on this color (6.81:1).
About this color
#63518B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.093 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.034 away. White text reads best on it, at 6.81:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.08:1 |
| White text | 6.81:1 |
Values
| HEX | #63518B |
| RGB | rgb(99, 81, 139) |
| HSL | hsl(259, 26%, 43%) |
| OKLCH | oklch(47.9% 0.093 297) |
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 #63518B | 6.81:1 | AA | Lc -88.4 | Fine for body text |
| Black text on #63518B | 3.08:1 | AA large text | Lc 20.6 | Dividers and decoration only |
| #63518B text on white | 6.81:1 | AA | Lc 83.4 | Fine for body text |
| #63518B text on black | 3.08:1 | AA large text | Lc -18.5 | Dividers and decoration only |
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 700.
-
Step 50
50
#F6F5F9
oklch(97.2% 0.005 297.7)
-
Step 100
100
#EAE8F2
oklch(93.5% 0.014 295.3)
-
Step 200
200
#DAD6E8
oklch(88.5% 0.025 296.1)
-
Step 300
300
#C3BBDB
oklch(80.9% 0.045 296.8)
-
Step 400
400
#A598C9
oklch(70.8% 0.072 296.7)
-
Step 500
500
#8F7DBB
oklch(63% 0.093 297)
-
Step 600
600
#7A66A7
oklch(55.7% 0.101 297.2)
-
Step 700
700 (this color)
#63518B
oklch(47.9% 0.093 297)
-
Step 800
800
#544574
oklch(42.7% 0.078 297.7)
-
Step 900
900
#453B5E
oklch(37.8% 0.06 296.6)
-
Step 950
950
#282237
oklch(26.9% 0.039 296.8)
#63518B 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) | #415B8D | 0.054 |
| Deuteranopia (no green cones) | #445A8A | 0.050 |
| Tritanopia (no blue cones) | #5B5B67 | 0.074 |
| Achromatopsia (no color) | #5B5B5B | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63518B
#63518B
oklch(47.9% 0.093 297)
- #5A641E
#5A641E
oklch(48% 0.094 117)
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 #63518B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.034
- Dusk #4E5481 ΔE 0.039
- Dusty Grape #545775 ΔE 0.050
- Dusky Blue #475F94 ΔE 0.052
- Denim Blue #3B5B92 ΔE 0.060
- Muted Purple #805B87 ΔE 0.061
- YInMn Blue #415A77 ΔE 0.068
- Dull Purple #84597E ΔE 0.069
Use #63518B 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.