#63538D
Closest named color: Twilight (#4E518B). oklch(48.4% 0.092 295.4), rgb(99, 83, 141).
Aa
White text reads best on this color (6.66:1).
About this color
#63538D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.092 and its hue 295°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.035 away. White text reads best on it, at 6.66:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.092) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.15:1 |
| White text | 6.66:1 |
Values
| HEX | #63538D |
| RGB | rgb(99, 83, 141) |
| HSL | hsl(257, 26%, 44%) |
| OKLCH | oklch(48.4% 0.092 295.4) |
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 #63538D | 6.66:1 | AA | Lc -87.9 | Fine for body text |
| Black text on #63538D | 3.15:1 | AA large text | Lc 21.2 | Dividers and decoration only |
| #63538D text on white | 6.66:1 | AA | Lc 82.8 | Fine for body text |
| #63538D text on black | 3.15:1 | AA large text | Lc -19.1 | 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
#C2BBDB
oklch(80.8% 0.045 295.4)
-
Step 400
400
#A498C9
oklch(70.7% 0.072 295.7)
-
Step 500
500
#8E7EBB
oklch(63.1% 0.092 295.7)
-
Step 600
600
#7867A7
oklch(55.7% 0.099 295.2)
-
Step 700
700 (this color)
#63538D
oklch(48.4% 0.092 295.4)
-
Step 800
800
#524674
oklch(42.7% 0.076 295)
-
Step 900
900
#443B5E
oklch(37.7% 0.06 295.2)
-
Step 950
950
#282337
oklch(27.1% 0.037 295.3)
#63538D 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) | #435D8F | 0.051 |
| Deuteranopia (no green cones) | #455B8C | 0.048 |
| Tritanopia (no blue cones) | #5A5D69 | 0.075 |
| Achromatopsia (no color) | #5C5C5C | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63538D
#63538D
oklch(48.4% 0.092 295.4)
- #5D651F
#5D651F
oklch(48.5% 0.093 115.5)
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 #63538D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.035
- Dusk #4E5481 ΔE 0.040
- Dusky Blue #475F94 ΔE 0.049
- Dusty Grape #545775 ΔE 0.050
- Denim Blue #3B5B92 ΔE 0.058
- Muted Purple #805B87 ΔE 0.058
- Denim #3B638C ΔE 0.067
- Dull Purple #84597E ΔE 0.067
Use #63538D 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.