#63497C
Closest named color: Dusk (#4E5481). oklch(45.5% 0.086 306.7), rgb(99, 73, 124).
Aa
White text reads best on this color (7.56:1).
About this color
#63497C is a medium-dark, moderately saturated purple. In OKLCH its lightness is 45%, its chroma 0.086 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.043 away. White text reads best on it, at 7.56:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | moderately saturated (0.086) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.77:1 |
| White text | 7.56:1 |
Values
| HEX | #63497C |
| RGB | rgb(99, 73, 124) |
| HSL | hsl(271, 26%, 39%) |
| OKLCH | oklch(45.5% 0.086 306.7) |
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 #63497C | 7.56:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #63497C | 2.77:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #63497C text on white | 7.56:1 | AAA | Lc 86.2 | Fine for body text |
| #63497C text on black | 2.77:1 | Fails | Lc -15.9 | 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 800.
-
Step 50
50
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE7F2
oklch(93.5% 0.016 306.4)
-
Step 200
200
#DED5E8
oklch(88.6% 0.027 307)
-
Step 300
300
#C9B9DB
oklch(81% 0.05 306.5)
-
Step 400
400
#AD94C8
oklch(70.7% 0.079 306.4)
-
Step 500
500
#9A78BA
oklch(63.1% 0.103 307.3)
-
Step 600
600
#8460A6
oklch(55.5% 0.112 306.8)
-
Step 700
700
#704F8F
oklch(49% 0.105 306.7)
-
Step 800
800 (this color)
#63497C
oklch(45.5% 0.086 306.7)
-
Step 900
900
#4B385D
oklch(37.8% 0.066 307.1)
-
Step 950
950
#2C2137
oklch(27.1% 0.042 306.7)
#63497C 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) | #3E537E | 0.061 |
| Deuteranopia (no green cones) | #44547B | 0.056 |
| Tritanopia (no blue cones) | #5F515C | 0.065 |
| Achromatopsia (no color) | #545454 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63497C
#63497C
oklch(45.5% 0.086 306.7)
- #4A5F26
#4A5F26
oklch(45.4% 0.086 126.5)
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 #63497C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.043
- Twilight #4E518B ΔE 0.043
- Dusty Grape #545775 ΔE 0.049
- Dark Slate Blue #483D8B ΔE 0.067
- YInMn Blue #415A77 ΔE 0.070
- Light Eggplant #894585 ΔE 0.072
- Blueberry #464196 ΔE 0.073
- Dusky Blue #475F94 ΔE 0.073
Use #63497C 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.