#63577D
Closest named color: Dusty Grape (#545775). oklch(48.4% 0.062 298.6), rgb(99, 87, 125).
Aa
White text reads best on this color (6.58:1).
About this color
#63577D is a medium-dark, muted purple. In OKLCH its lightness is 48%, its chroma 0.062 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.028 away. White text reads best on it, at 6.58:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | muted (0.062) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.18:1 |
| White text | 6.58:1 |
Values
| HEX | #63577D |
| RGB | rgb(99, 87, 125) |
| HSL | hsl(259, 18%, 42%) |
| OKLCH | oklch(48.4% 0.062 298.6) |
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 #63577D | 6.58:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #63577D | 3.18:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #63577D text on white | 6.58:1 | AA | Lc 82.6 | Fine for body text |
| #63577D text on black | 3.18:1 | AA large text | Lc -19.3 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#DAD7E3
oklch(88.5% 0.017 297.5)
-
Step 300
300
#C3BDD2
oklch(81% 0.03 298.8)
-
Step 400
400
#A49BBB
oklch(70.8% 0.047 298.1)
-
Step 500
500
#8E82AA
oklch(63.2% 0.061 298.4)
-
Step 600
600
#786B95
oklch(55.6% 0.066 298.4)
-
Step 700
700 (this color)
#63577D
oklch(48.4% 0.062 298.6)
-
Step 800
800
#524967
oklch(42.7% 0.05 298)
-
Step 900
900
#443D54
oklch(37.7% 0.04 298.4)
-
Step 950
950
#282431
oklch(27% 0.024 298.9)
#63577D 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) | #4F5D7F | 0.033 |
| Deuteranopia (no green cones) | #505D7C | 0.033 |
| Tritanopia (no blue cones) | #5E5D65 | 0.049 |
| Achromatopsia (no color) | #5D5D5D | 0.062 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63577D
#63577D
oklch(48.4% 0.062 298.6)
- #5B643B
#5B643B
oklch(48.5% 0.062 118.9)
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 #63577D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.028
- Dusk #4E5481 ΔE 0.036
- Twilight #4E518B ΔE 0.047
- YInMn Blue #415A77 ΔE 0.052
- Dusky Blue #475F94 ΔE 0.052
- Muted Purple #805B87 ΔE 0.054
- Slate #516572 ΔE 0.056
- Dull Purple #84597E ΔE 0.058
Use #63577D 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.