#63537C
Closest named color: Dusty Grape (#545775). oklch(47.5% 0.067 301.8), rgb(99, 83, 124).
Aa
White text reads best on this color (6.86:1).
About this color
#63537C is a medium-dark, muted purple. In OKLCH its lightness is 47%, its chroma 0.067 and its hue 302°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusty Grape (#545775), ΔE 0.030 away. White text reads best on it, at 6.86:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | muted (0.067) |
| Temperature | in between |
| Nearest name | Dusty Grape (#545775) |
| Black text | 3.05:1 |
| White text | 6.86:1 |
Values
| HEX | #63537C |
| RGB | rgb(99, 83, 124) |
| HSL | hsl(263, 20%, 41%) |
| OKLCH | oklch(47.5% 0.067 301.8) |
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 #63537C | 6.86:1 | AA | Lc -88.7 | Fine for body text |
| Black text on #63537C | 3.05:1 | AA large text | Lc 20.3 | Dividers and decoration only |
| #63537C text on white | 6.86:1 | AA | Lc 83.7 | Fine for body text |
| #63537C text on black | 3.05:1 | AA large text | Lc -18.3 | 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
#EBE8EF
oklch(93.5% 0.01 305.4)
-
Step 200
200
#DBD7E3
oklch(88.6% 0.017 301.2)
-
Step 300
300
#C4BCD3
oklch(80.9% 0.033 301.5)
-
Step 400
400
#A699BC
oklch(70.6% 0.052 302)
-
Step 500
500
#9180AC
oklch(63.1% 0.068 302.2)
-
Step 600
600
#7B6997
oklch(55.6% 0.073 302)
-
Step 700
700 (this color)
#63537C
oklch(47.5% 0.067 301.8)
-
Step 800
800
#544869
oklch(42.7% 0.056 300.8)
-
Step 900
900
#463C55
oklch(37.7% 0.044 302.7)
-
Step 950
950
#292332
oklch(27% 0.029 302.8)
#63537C 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) | #4A5A7E | 0.041 |
| Deuteranopia (no green cones) | #4D5A7B | 0.038 |
| Tritanopia (no blue cones) | #5F5962 | 0.052 |
| Achromatopsia (no color) | #5A5A5A | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63537C
#63537C
oklch(47.5% 0.067 301.8)
- #566236
#566236
oklch(47.4% 0.067 121.5)
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 #63537C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusty Grape #545775 ΔE 0.030
- Dusk #4E5481 ΔE 0.034
- Twilight #4E518B ΔE 0.043
- YInMn Blue #415A77 ΔE 0.054
- Dusky Blue #475F94 ΔE 0.057
- Muted Purple #805B87 ΔE 0.058
- Dull Purple #84597E ΔE 0.062
- Denim Blue #3B5B92 ΔE 0.064
Use #63537C 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.