#63539B
Closest named color: Twilight (#4E518B). oklch(49.2% 0.113 291.9), rgb(99, 83, 155).
Aa
White text reads best on this color (6.47:1).
About this color
#63539B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.113 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.043 away. White text reads best on it, at 6.47:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.113) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.24:1 |
| White text | 6.47:1 |
Values
| HEX | #63539B |
| RGB | rgb(99, 83, 155) |
| HSL | hsl(253, 30%, 47%) |
| OKLCH | oklch(49.2% 0.113 291.9) |
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 #63539B | 6.47:1 | AA | Lc -87.1 | Fine for body text |
| Black text on #63539B | 3.24:1 | AA large text | Lc 22.0 | Dividers and decoration only |
| #63539B text on white | 6.47:1 | AA | Lc 82.0 | Fine for body text |
| #63539B text on black | 3.24:1 | AA large text | Lc -19.9 | 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 700.
-
Step 50
50
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#EAE8F4
oklch(93.6% 0.016 293.7)
-
Step 200
200
#D9D6EC
oklch(88.5% 0.03 292)
-
Step 300
300
#C1BBE2
oklch(81% 0.055 292.2)
-
Step 400
400
#A197D3
oklch(70.7% 0.087 291.6)
-
Step 500
500
#8B7CC7
oklch(63% 0.112 292.1)
-
Step 600
600
#7564B4
oklch(55.5% 0.122 291.7)
-
Step 700
700 (this color)
#63539B
oklch(49.2% 0.113 291.9)
-
Step 800
800
#51447D
oklch(42.7% 0.093 292.5)
-
Step 900
900
#433A65
oklch(37.8% 0.072 292.2)
-
Step 950
950
#27223B
oklch(27% 0.046 292.2)
#63539B 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) | #3A5F9E | 0.061 |
| Deuteranopia (no green cones) | #3C5D99 | 0.058 |
| Tritanopia (no blue cones) | #55616F | 0.094 |
| Achromatopsia (no color) | #5E5E5E | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #63539B
#63539B
oklch(49.2% 0.113 291.9)
- #636600
#636600
oklch(49.1% 0.109 111.8)
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 #63539B, closest first.
No curated palette has a color within ΔE 0.04 of #63539B.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.043
- Dusky Blue #475F94 ΔE 0.052
- Dusk #4E5481 ΔE 0.055
- Denim Blue #3B5B92 ΔE 0.061
- Iris #6258C4 ΔE 0.064
- Muted Purple #805B87 ΔE 0.067
- Blueberry #464196 ΔE 0.071
- Dusty Grape #545775 ΔE 0.071
Use #63539B 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.