#634784
Closest named color: Twilight (#4E518B). oklch(45.5% 0.101 303.8), rgb(99, 71, 132).
Aa
White text reads best on this color (7.59:1).
About this color
#634784 is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.101 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.041 away. White text reads best on it, at 7.59:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.101) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.76:1 |
| White text | 7.59:1 |
Values
| HEX | #634784 |
| RGB | rgb(99, 71, 132) |
| HSL | hsl(268, 30%, 40%) |
| OKLCH | oklch(45.5% 0.101 303.8) |
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 #634784 | 7.59:1 | AAA | Lc -91.0 | Preferred for body text |
| Black text on #634784 | 2.76:1 | Fails | Lc 17.8 | Dividers and decoration only |
| #634784 text on white | 7.59:1 | AAA | Lc 86.2 | Fine for body text |
| #634784 text on black | 2.76:1 | Fails | Lc -15.8 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DDD4EB
oklch(88.4% 0.033 303.4)
-
Step 300
300
#C8B8E0
oklch(80.9% 0.058 303.3)
-
Step 400
400
#AD92D1
oklch(70.7% 0.095 303.7)
-
Step 500
500
#9976C4
oklch(63.1% 0.12 303.8)
-
Step 600
600
#845DB1
oklch(55.5% 0.131 303.9)
-
Step 700
700
#704C98
oklch(49% 0.122 304.1)
-
Step 800
800 (this color)
#634784
oklch(45.5% 0.101 303.8)
-
Step 900
900
#4B3663
oklch(37.7% 0.078 304.4)
-
Step 950
950
#2C203A
oklch(27% 0.049 304.5)
#634784 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) | #375386 | 0.070 |
| Deuteranopia (no green cones) | #3E5482 | 0.065 |
| Tritanopia (no blue cones) | #5D515F | 0.075 |
| Achromatopsia (no color) | #545454 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #634784
#634784
oklch(45.5% 0.101 303.8)
- #4B6015
#4B6015
oklch(45.6% 0.102 124.2)
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 #634784, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.041
- Dusk #4E5481 ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.059
- Dusty Grape #545775 ΔE 0.061
- Rebecca Purple #663399 ΔE 0.062
- Blueberry #464196 ΔE 0.063
- Light Eggplant #894585 ΔE 0.071
- Dusky Blue #475F94 ΔE 0.074
Use #634784 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.